|Halo: Combat Evolved|
Artwork for U.S. and European releases, depicting the player character Master Chief
Gearbox Software (PC)
Westlake Interactive (Mac)
|Artist(s)||Marcus R. Lehto|
Shi Kai Wang
Halo: Combat Evolved is a first-person shooter video game developed by Bungie and published by Microsoft Game Studios. It was released as a launch title for Microsoft's Xbox video game console on November 15, 2001. Microsoft released versions of the game for Microsoft Windows and Mac OS X in 2003. The game was later released as a downloadable Xbox Original for the Xbox 360.Halo is set in the twenty-sixth century, with the player assuming the role of the Master Chief, a cybernetically enhanced supersoldier. The Chief is accompanied by Cortana, an artificial intelligence. Players battle various aliens as they attempt to uncover the secrets of the eponymous Halo, a ring-shaped artificial world.
Bungie began the development of what would eventually become Halo in 1997. Initially, the game was a real-time strategy game that morphed into a third-person shooter before becoming a first-person shooter. During development, Microsoft acquired Bungie and turned the game into a launch title for its new video game console, the Xbox.
Halo was a critical and commercial success, and has been praised as one of the greatest video games of all time. The game's popularity led to labels such as "Halo clone" and "Halo killer", applied to games either similar to or anticipated to be better than it. Its sequel, Halo 2, was released for the original Xbox on November 9, 2004. Halo spawned a multimedia franchise that has grossed more than $4.6 billion worldwide, incorporating games, books, toys, and films. In addition, the game inspired and was used in the fan-created Red vs. Blue video series, which is credited as the "first big success" of machinima (the technique of using real-time 3D engines, often from video games, to create animated films).
More than five million copies were sold worldwide by November 2005. A high-definition remake, Halo: Combat Evolved Anniversary, was released for Xbox 360 on the 10th anniversary of the original game's launch. Anniversary was re-released for Xbox One as part of Halo: The Master Chief Collection in 2014. The collection will be released for Windows in 2019.
Halo: Combat Evolved is a shooter game in which players experience gameplay in a 3D environment almost entirely from a first-person view (FPS). The player can move around and look up, down, left, or right. The game features vehicles, ranging from armored jeeps and tanks to alien hovercraft and aircraft, many of which can be controlled by the player. The game switches to a third-person perspective during vehicle use for pilots and mounted gun operators; passengers maintain a first-person view. The game's heads-up display includes a "motion tracker" that registers moving allies, moving or firing enemies, and vehicles, in a certain radius of the player.
The player character is equipped with an energy shield that nullifies damage from weapons fire and forceful impacts. The shield's charge appears as a blue bar in the corner of the game's heads-up display, and it automatically recharges if no damage is sustained for a brief period. When the shield is fully depleted, the player becomes highly vulnerable, and further damage reduces the hit points of a secondary health meter. When this health meter reaches zero, the character dies and the game reloads from a saved checkpoint. Health can be replenished through the collection of health packs scattered around the game's levels.
Halo's arsenal consists of weapons from science fiction. The game has been praised for giving each weapon a unique purpose, thus making each useful in different scenarios. For example, plasma weapons need time to cool if fired too rapidly, but cannot be reloaded and must be discarded upon depletion of their batteries, whereas conventional firearms cannot overheat, but require reloading and ammunition. In contrast to the large weapon inventories of contemporary FPS games, Halo players may carry only two weapons at once, calling for strategy when managing firearms.
Halo departs from traditional FPS conventions by not forcing the player character to holster its firearm before deploying grenades or melee-range blunt instruments; instead, both attacks can be utilized while a gun is still equipped, supplanting or supplementing small-arms fire. Like the game's other weapons, the two types of grenades differ; the fragmentation grenade bounces and detonates quickly, whereas the plasma grenade adheres to targets before exploding.
The game's main enemy force is the Covenant, a group of alien species allied by belief in a common religion. Their forces include Elites, fierce warriors protected by recharging energy shields similar to the player's own; Grunts, which are short, cowardly creatures who are usually led by Elites in battle, and often flee in terror instead of fighting in the absence of a leading Elite; Jackals, originally space pirates, who wear a highly durable energy shield on one arm and a form of handgun on the other; and Hunters, large, powerful creatures composed of small worm-like colonies with thick armor plates that cover the majority of their bodies and a large assault cannon that fires explosive rounds of green plasma. A secondary enemy is the Flood, a parasitic alien life form that appears in several variants. Other enemies include Sentinels, aerial robots designed by an extinct race called the Forerunners to protect their structures and prevent Flood outbreaks. Sentinels are able to hover around in enclosed spaces and produce an energy shield when under attack. They lack durability, but use powerful laser beam weapons and are immune to infection by the Flood.
The artificial intelligence in Halo has been favorably received. The player is often aided by United Nations Space Command (UNSC) Marines, who offer ground support, such as manning gun turrets or riding shotgun while the player is driving a vehicle.
A split screen mode allows two players to cooperatively play through Halos campaign. The game also includes five competitive multiplayer modes, which all can be customized, for between two and 16 players; up to four players may play split-screen on one Xbox, and further players can join using a "System Link" feature that allows up to four Xbox consoles to be connected together into a local area network.Halo lacks artificially intelligent game bots, and was released before the launch of the Xbox Live online multiplayer service; therefore LAN parties are needed to reach the game's 16-player limit, a setup that was a first for a console game, but was often deemed impractical by critics. Aside from this limitation, Halo's multiplayer components were generally well received by critics, and it is widely considered one of the best multiplayer games of all time.
Although the Xbox version of Halo lacks official support for online multiplayer play, third-party packet tunneling software provide unofficial ways around this limitation. The Windows and Macintosh ports of Halo support online matches involving up to 16 players and include multiplayer maps, not in the original Xbox release. However, co-operative play was removed from the ports because it would have required large amounts of recoding to implement. In April 2014, it was announced that GameSpy's servers and matchmaking, on which Halo PC relied, would be shut down by May 31 of the same year. A team of fans and Bungie employees announced they would produce a patch for the game to keep its multiplayer servers online. The patch was released on May 16, 2014.
Halo: Combat Evolved takes place in a 26th-century science fiction setting. Faster-than-light travel called slipspace:3 allows the human race to colonize planets other than Earth. The planet Reach serves as an interstellar hub of scientific and military activity. The United Nations Space Command (UNSC) develops a secret program to create augmented supersoldiers known as Spartans. More than twenty years before the beginning of the game, a technologically advanced collective of alien races called the Covenant begins a holy war against humanity, declaring them an affront to their gods. Humanity's military experiences a series of crushing defeats; although the Spartans are effective against the Covenant, they are too few in number to turn the tide. In 2552, Covenant forces attack Reach and destroy the colony. The starship Pillar of Autumn escapes the planet with the Spartan Master Chief Petty Officer John-117 on board. The ship initiates a jump to slipspace, hoping to lead the enemy away from Earth.:4-5
The game begins as Pillar of Autumn exits slipspace, having escaped the annihilation of the planet Reach, a human-populated colonial planet. The crew discovers a large ringworld structure of unknown origin orbiting a nearby exoplanet. However, before research or investigation can commence, The Covenant - a zealous alliance of advanced space-faring species that are at war with humanity - pursues Autumn out of slipspace and takes immediate hostile action. With the ship irreparably damaged, Autumns captain, Jacob Keyes, entrusts the ship's artificial intelligence (AI) known as Cortana to super-soldier John-117 ("Master Chief"), in order to prevent the Covenant from discovering the location of Earth; he also orders an extensive evacuation and resorts to a desperate crash-landing onto the ringworld.
On the ring's surface, Master Chief and Cortana rescue other survivors and help organize a counter-offensive, which involves regrouping UNSC efforts and supplies, and acquiring important intelligence, such as the cartography of the ringworld. Learning that Keyes survived the crash-landing, and that he was subsequently captured by the Covenant, Master Chief and a small contingency of soldiers infiltrate the Covenant cruiser Truth and Reconciliation in an attempt to extricate him. The rescue operation is a success, but concern grows as Keyes reveals that the Covenant call the ringworld "Halo", and that they believe it to be a weapon. Intent on stopping the Covenant from using Halo, Keyes searches for what he hopes to be a weapons cache, while Master Chief and Cortana mount an assault on the ringworld's control room, which is heavily occupied by Covenant forces. After UNSC force overwhelm the Covenent fortifications, Cortana enters Halo's computer systems and discovers dismaying information about the installation's purpose. She sends Master Chief on an urgent mission to find and stop Keyes from continuing his search.
Reaching the captain's last location too late, Master Chief encounters a new enemy, a parasite that assimilates human and Covenant alike, called the Flood. The accidental release of the Flood prompts Halo's caretaker, the AI 343 Guilty Spark, to enlist Master Chief's help in activating the ring's defenses. After Master Chief retrieves the ring's activation index, 343 Guilty Spark transports him back to the control room. As Master Chief prepares to activate Halo, Cortana intervenes, and accuses 343 Guilty Spark of attempted mass-extinction on a galaxy-wide scale. While Master Chief was acquiring the activation index, Cortana had uncovered several disturbing things about the Halo installation, which is designed to destroy the galaxy's sentient life, as a last resort, thus starving and destroying the parasite.
Defying 343 Guilty Spark, Master Chief and Cortana decide to destroy Halo to prevent its activation. In response, 343 Guilty Spark delegates Sentinel forces to eliminate Master Chief and Cortana, who strategically sabotage several of the installation's Phase Pulse Generators, which are necessary for successful activation. Needing Keyes' command codes to destroy Autumn and Halo with it, Master Chief returns to Truth and Reconciliation, only to find Keyes assimilated by the Flood. Retrieving the codes from the captain's remains, Master Chief returns to Autumn, but 343 Guilty Spark obstructs the self-destruct sequence. Master Chief and Cortana manually destabilize the ship's reactors as an alternative, narrowly escaping the detonation in another smaller ship, while the majority of the remaining Covenant, UNSC forces, and infected Flood are destroyed along with the Halo installation.
In a post-credits scene, 343 Guilty Spark is shown to have survived Halo's destruction.
In 1997, Bungie comprised around 15 people working in south Chicago, Illinois. During the development of Myth II: Soulblighter, a group of three:7'02'-7'05'began work on a science-fiction-based real-time strategy game (RTS) with a focus on realistic physics simulations and three-dimensional terrain. Early versions of the game used the Myth engine and isometric perspective. The project had the working title Monkey Nuts, then Blam! after project lead Jason Jones could not bring himself to tell his mother the original name.:ix
Experimenting with ways of controlling units, Bungie added a mode that attached the camera to individual units' perspectives. The vantage point continually moved closer to the units as the developers realized it would be more fun for players to drive the vehicles than have the computer do it. "And controlling [the vehicle], just that double tactile nature of load a dude in, get a dude out, hands on the steering wheel--it was like, this shouldn't be an RTS game," Bungie founder Alex Seropian recalled. By mid-1998 the game had become a third-person shooter.
Peter Tamte, Bungie's then-executive vice president, used his contacts from his former position at Apple to get Joseph Staten and Jason Jones an audience with CEO Steve Jobs. Jobs, impressed, who agreed to debut the game to the world at the 1999 Macworld Conference & Expo. Anticipation built for the unknown Bungie game after favorable reviews from industry journalists under non-disclosure agreements at Electronic Entertainment Expo 1999.
Days before the Macworld announcement, Blam! still did not have a permanent title--possible names had included The Santa Machine, Solipsis, The Crystal Palace, Hard Vacuum, Star Maker, and Star Shield. Bungie hired a branding firm that came up with the name Covenant, but Bungie artist Paul Russell suggested a few alternatives, including Halo. Though some did not like the name--likening it to something religious or a women's shampoo--designer Marcus Lehto said, "it described enough about what our intent was for this universe in a way that created this sense of mystery." On July 21, 1999, during the Macworld Conference & Expo, Jobs announced that Halo would be released for MacOS and Windows simultaneously.
The story premise at this point involved a human transport starship that crash-lands on a mysterious ringworld. Early versions of Covenant aliens appear in great numbers to loot what they can, and war erupts between them and the humans. Unable to match the technologically advanced alien race, the humans resort to guerrilla warfare. At this point, Bungie promised an open world game with terrain that reacted and deformed from explosions, persistent environment details such as spent shell casings, and variable weather, none of which made it into the final product. These early versions featured Halo-specific fauna, later dropped following design difficulties and the creatures' detraction from the surprise appearance of the Flood. The Master Chief was simply known as the cyborg. When Halo was shown at E3 in June 2000, it was still a third-person shooter.
Bungie's financial situation during Halos development was precarious. Ahead of Myth II: Soulblighters release, Bungie was surviving from its predecessor's sales and had missed release dates. A glitch that caused Myth II to wipe the contents of the directory it was installed to was discovered only after 200,000 copies had been produced for the December 1998 launch. Bungie recalled the copies and issued a fix, costing the company $800,000. As a result, Bungie sold a share of the company and publishing rights to Take-Two Interactive. Still facing financial difficulties, Bungie's Tamte contacted Ed Fries, the head of Microsoft Game Studios, about a possible acquisition. Fries was working on developing the software lineup for Microsoft's first game console, the Xbox. Fries negotiated an agreement with Take-Two Interactive wherein Microsoft gained Bungie and the rights to Halo, while Take-Two kept the Myth and Oni properties. Jones and Seropian pitched the purchase to the rest of Bungie as the way they could shape the future of a new game console. Microsoft announced its acquisition of Bungie on June 19, 2000.Halo was now to be the tentpole launch title for the Xbox.
In less than a year, Bungie had to turn Halo from a loose collection of ideas into a shipping product on an unproven console. To make players feel more connected to the action, Jason Jones pushed for turning the game's perspective from third-person to first-person. A key concern was making sure the game played well on the Xbox's gamepad--at the time, first-person shooters on consoles were rare. Designer Jaime Griesemer spearheaded the effort to adapt Halo to the gamepad. Griesemer worked on code that tried to discern player intent and assist the player's movement and aiming without being obvious. The game buffered player inputs so that the result was the desired player movement, rather than the movement players were actually making. Other Bungie projects were scrapped, and their teams absorbed into Halo in the rush to complete it. Griesemer said that after the Bungie team moved to Microsoft's campus in Redmond, Washington, he was so busy he did not unpack his belongings for six months. The designers prototyped encounters and enemy AI on a sandbox level, "B30". The success of gameplay on this small chunk of the game energized the team, and B30 became "The Silent Cartographer", the fourth mission.
Bungie cut features drastically to make the release date. The open-world plans were scrapped,:14'40'-14'45' and it became clear the lengthy planned campaign was not feasible. Staten described his resulting role as putting "story duct tape" over gaps that appeared to smooth them over. To save time, Lehto floated the idea of reusing campaign levels; glowing directional arrows were added after playtesters got lost. Microsoft game writers Eric Trautmann and Brandon Boren performed last-minute rewrites to improve the game's script a week before voiceover sessions while not being allowed to view the game itself. The campaign cutscenes came in so late that composer Martin O'Donnell had to score them in only three days. An online multiplayer component was dropped because Xbox Live would not be ready. Only four months before release, it was decided that the multiplayer was still not fun, so it was scrapped and rebuilt from scratch, using team members who moved from the defunct Bungie West team after completing Oni.
Bungie's social culture--and the rush to complete the game--meant that team members provided input and feedback across disciplines.:4, 67 Aspects such as level design demanded collaboration between the designers creating the environments for players to explore, and the artists who developed those environments' aesthetics.:65 Initially artists Robert McLees and Lehto were the only artists working on what would become Halo. Bungie hired Shi Kai Wang as an additional artist to refine Lehto's designs.:5 The aliens making up the Covenant began with varied exploratory designs that coalesced once each enemy's role in the gameplay was defined.:28
Spearheaded by Paul Russell, the game's visual design changed in response to the changing gameplay and story. The artists made efforts to distinguish each faction in the game by their architecture, technology, and weaponry.:76-77 The UNSC's original curved look was made blockier to distinguish it from the Covenant; likewise human weapons remained projectile-based to provide a contrast to the Covenant's energy weapons. The interiors of Pillar of Autumn drew significant influence from the production design of the film Aliens.:75 Organic, curvilinear forms along with a color palette of greens and purples were used for the Covenant, while the Forerunner came to be defined by their angular constructions; the interiors originally drew on Aztec patterns and the work of Louis Sullivan, before becoming more refined just five months from the game's completion.:79
Composer Martin O'Donnell and his company TotalAudio were tasked with creating the music for Halos MacWorld debut. Staten told O'Donnell that the music should give a feeling of ancient mystery. O'Donnell decided Gregorian chant fit the bill, and performed the vocals alongside his composing partner Michael Salvatori and additional singers. Because he did not know how long the presentation would be, O'Donnell created "smushy" opening and closing sections that could be expanded or cut as the time required to back up a rhythmic middle section. The music was recorded and sent to New York for the show the same night the piece was finished.
He designed the music so that it "could be dissembled and remixed in such a way that would give [him] multiple, interchangeable loops that could be randomly recombined in order to keep the piece interesting as well as a variable-length." Development involved the creation of "alternative middle sections that could be transitioned to if the game called for such a change (i.e. less or more intense)."
O'Donnell sat with the level designers to walk through the levels, constructing music that would adapt to the gameplay rather than be static; "[t]he level designer would tell me what he hoped a player would feel at certain points or after accomplishing certain tasks." Based on this information, O'Donnell would develop cues the designer could script into the level, and then designer and composer would play through the mission to see if the audio worked. He explained that the use of music in Halo is sparse because he believes that "[music] is best used in a game to quicken the emotional state of the player and it works best when used least," and that "[if] music is constantly playing it tends to become sonic wallpaper and loses its impact when it is needed to truly enhance some dramatic component of gameplay."
Ed Fries described the period before the Xbox's launch as chaotic; "You've got to imagine this environment of panic combined with adrenaline, but money's mostly no object at the same time. So we were spending lots of it, trying to do all this crazy stuff," he recalled. Several planned video game tie-ins to Steven Spielberg's film A.I. Artificial Intelligence were scrapped, and it became clear that Halo had to be the Xbox's tentpole title. After Bungie refused to change the Halo name to appease marketing research teams, the subtitle "Combat Evolved" was added to make it more descriptive and compete better with other military-themed games.
Halos debut had been well-received, but its move to the unproven Xbox console meant that it was treated more coolly by the press.:16 While a playable demonstration of the game at Gamestock 2001 was well-received, critics had mixed reactions to its exhibition at E3 2001, where the game was shown off in a very broken state, with poor frame rates and technical issues.:17 Some personnel took to sleeping in the office for the last few months to make sure the game made its deadline.:ix-xi
The game was released in North America simultaneously with the Xbox, on November 15, 2001.
Released just before Combat Evolved was Halo: The Fall of Reach, a prequel to the game. Science fiction author Eric S. Nylund penned the novel in seven weeks. The novel was nearly killed halfway to completion; Nylund credits Trautmann with saving it.The Fall of Reach became a Publishers Weekly bestseller with almost two hundred thousand copies sold. The following novel, entitled Halo: The Flood, is a tie-in to Halo: Combat Evolved, describing not only the experiences of the Master Chief but also those of other characters on Installation 04. Written by William C. Dietz, this novel appeared on the Publishers Weekly bestsellers list during May 2003.
On July 12, 2002, a Halo port for Windows was announced to be under development by Gearbox Software. Its showing at E3 2003 was positively received by some critics, with skepticism by others. It was released on September 30, 2003, and included support for online multiplayer play and featured sharper graphics, but had compatibility issues that caused poor performance.Halo was later released for Mac OS X on December 11, 2003. On December 4, 2007, the game became available for the Xbox 360 via download from the Xbox Live Marketplace.
While Halo was not an instant runaway success on release, it had a long tail sales rate and a very high attach rate for the Xbox. By April 2002, roughly five months after its release, one million units had been sold: this pace was faster than that of any previous sixth-generation console game. During the two months following Halo's release, the game sold alongside more than fifty percent of Xbox consoles. By July 14, 2003, the game had sold three million copies worldwide, and by January 28, 2004, it had reached four million copies. As of November 9, 2005, Halo has sold over five million copies worldwide. By July 2006, its Xbox version had sold 4.2 million copies and earned $170 million in the United States alone. Next Generation ranked it as the second highest-selling game launched for the PlayStation 2, Xbox or GameCube between January 2000 and July 2006 in that country. Its computer version sold 670,000 copies and earned $22.2 million in the United States by August 2006.
Halo received "universal acclaim", according to review aggregator Metacritic, based on reviews from 68 professional critics.Ste Curran's review for Edge praised the game as "the most important launch game for any console, ever" and commented, "GoldenEye was the standard for multiplayer console combat. It has been surpassed."GameSpot claimed that "Halo's single-player game is worth picking up an Xbox for alone," concluding, "Not only is this easily the best of the Xbox launch games, but it's easily one of the best shooters ever, on any platform."IGN remarked similarly, calling Halo a "can't miss, no-brainer, sure thing, five star, triple A game."AllGame editor Jonathan Licata praised Bungie for doing "a remarkable job with Halo, taking many successful elements from previous standouts in the genre to make one very playable game". Among the specific aspects that reviewers praised were the balance of weapons, the role of drivable vehicles, and the artificial intelligence of enemies.
The game received numerous Game of the Year awards, including those of the Academy of Interactive Arts & Sciences,Electronic Gaming Monthly, Edge, and IGN. The British Academy of Film and Television Arts awarded Halo "Best Console Game," and Rolling Stone presented it with their "Best Original Soundtrack" award. According to Xbox.com, the game received a total of 48 awards.
Although Halos overall reception was largely positive, the game received criticism for its level design. GameSpy commented, "you'll trudge through countless hallways and control rooms that all look exactly the same, fighting identical-looking groups of enemies over and over and over...it is simply frustrating to see a game with such groundbreaking sequences too often degenerate [into] this kind of mindless, repetitive action." Similarly, an article on Game Studies.org remarked, "In the latter part of the game, the scenarios rely on repetition and quantity rather than innovativeness and quality."Eurogamer concluded, "Halo is very much a game of two halves. The first half is fast, exciting, beautifully designed and constantly full of surprises. The second half is festooned with gobsmacking plot twists and great cinematics but let down by repetitive paint by numbers level design."Halo was released prior to the launch of Xbox Live, and the lack of both online multiplayer and bots to simulate human players was criticized by GameSpy; in 2003 GameSpy included Halo in a list of "Top 25 Most Overrated Games of All Time."
Halo's PC port received generally favorable reviews, garnering a score of 83% on Metacritic. GameSpot stated that it was "still an incredible action game ... [and] a true classic," awarding it 9.0 out of 10. It received a score of 8.2 out of 10 from IGN, who stated, "If you've played the game on the Xbox, there's not much for you here." Eurogamer called the game "a missed opportunity," but stated that the online multiplayer component was "a massive draw ... for Halo veterans."
Halo has been praised as one of the greatest video games of all time, and was ranked by IGN as the fourth-best first-person shooter made. The game's popularity led to labels such as "Halo clone" and "Halo killer", applied to games either similar to or anticipated to be better than it.
According to GameSpot, Halos "numerous subtle innovations have been borrowed by countless other games since." The game is often cited as the main reason for the Xbox's success, and it began what is commonly regarded as the system's flagship franchise. Game designer Vox Day credited the game with using science-fiction environments to follow Half-Life in eschewing static levels and a similarity to dungeon crawls, which the FPS genre inherited from Akalabeth. Day further wrote that Halo spurred a sustained trend of many other FPS console games. In July 2006, Next-Gen.biz published an article estimating Halo as the second-highest revenue-generating 21st century console video game in the United States, behind Grand Theft Auto: Vice City. The game's popularity sparked the usage of terms like "Halo clone" and "Halo killer." The Halo engine has been used for the game Stubbs the Zombie in Rebel Without a Pulse.
Halo has been featured at both Major League Gaming and the World Cyber Games. In machinima, the game was used as the basis for the popular web series Red vs. Blue. The game's sequel, Halo 2, made US$125 million with unit sales of 2.38 million on the first day of its release, earning it the distinction of the fastest-selling United States media product in history. Three years later, Halo 3 shattered that record with the biggest opening day in entertainment history, taking in US$170 million in its first 24 hours.
Halo is also accredited with modernizing the FPS genre.
On March 15, 2004, Gearbox Software released Halo: Custom Edition for Windows, which enabled players to use custom-made maps and game modifications via the Halo Editing Kit developed by Bungie.Halo: Custom Edition is multiplayer-only, and requires an original copy of Halo for PC to install.
During the Microsoft press conference at the 2011 E3 Expo, it was revealed that Halo: Combat Evolved would be remade by 343 Industries with an in-house game engine and would include achievements, Terminals, and Skulls. It was released for the Xbox 360 on November 15, 2011. The release date marks the 10th anniversary of the original game's release. The remastered version of the original game includes online multiplayer and cooperative play functionality. The remake is also the first Halo game to include Kinect support. The game is a mix of two game engines--the original Halo engine created by Bungie which provides gameplay and a new engine created by 343 and Saber which is responsible for improved graphics--and the player is able to switch between the improved and classic modes of the game at any time. The game's multiplayer component uses the Halo: Reach gameplay engine, tailored with a map playlist to mimic the original multiplayer, as opposed to including the original game's multiplayer mode.
The Anniversary version of the game is the version contained in The Master Chief Collection for Xbox One. The single-player game is identical to the Xbox 360 version, including the ability to swap between the updated "anniversary" graphics and the original game graphics. However, unlike the Xbox 360 release, the multiplayer component is the original multiplayer engine from Combat Evolved as opposed to Halo: Reach and is playable over Xbox Live, something not possible until The Master Chief Collection.
Jaime Griesemer: At the time, Microsoft marketing thought Halo was not a good name for a videogame brand. It wasn't descriptive like all the military games we were competing with. We told them Halo was the name. The compromise was they could add a subtitle. Everyone at Bungie hated it. But it turned out to be a very sticky label and has now entered the gaming lexicon... so I guess in hindsight it was a good compromise. But the real name of the game is just Halo.
Will Tuttle: "So it was with great disappointment that I finished my review copy of Sony's Killzone, a game that was at one time unfairly labeled a "Halo killer" by some members of the gaming press.