Guitar Hero: Metallica is a 2009 rhythm game developed by Neversoft and published by Activision. It is the seventh installment in the Guitar Hero series and the second to focus on the career and songs of one rock band, Metallica, following Guitar Hero: Aerosmith (2008). The game was released in North America on the PlayStation 3, Wii, and Xbox 360 on March 29, 2009, and on PlayStation 2 on April 14, 2009, with an Australian and European release in May 2009.

The game is based on Guitar Hero World Tour (2008), with support for lead and bass guitar, drums, and vocals. The game has many of the same features from World Tour, including single-player and band Career modes, online competitive modes, and the ability to create and share songs through "GHTunes". In addition to the normal difficulty levels presented in Guitar Hero World Tour, Guitar Hero: Metallica provides an "Expert+" difficulty for drums that allows the use of a second bass drum pedal to match the drumming style of Metallica's Lars Ulrich. The game features 28 master recordings spanning Metallica's career and an additional 21 songs selected by members of Metallica. The band performed extensive motion capture for the game for their in-game avatars and performances. The game includes several extras including behind-the-scenes videos of the motion capture sessions, tour and concert videos of the band, and Pop-Up Video-like facts for many of the songs on the game disc.

Guitar Hero: Metallica received positive reviews, with critics stating it to be a strong tribute to the band and Neversoft's best work on the Guitar Hero series to date. The difficulty throughout the game was praised, found to be more enjoyable to players of all skill levels than the more-difficult Guitar Hero III: Legends of Rock. Reviewers noted the lack of additional downloadable content, save for the pre-existing Death Magnetic songs, the cartoonish storyline for the Career mode, and the overall value of the game as some of the negatives to the experience.

Gameplay

Guitar Hero: Metallica, like other games in the Guitar Hero series, allows players to simulate the playing of rock music using special instrument controllers. The game is based on the band approach presented in Guitar Hero World Tour, and features parts of lead and bass guitar, drums, and vocals. To successfully complete songs and score, players must use the instruments to play notes that scroll on-screen in time with the music. For lead and bass guitar players, this is done by holding down colored fret buttons on the guitar neck while striking a strum bar; for the drum players, this requires the player to strike the appropriate drum pad or kick with the bass drum pedal; for vocals, the player must attempt to match the pitch of the notes through a microphone. Players earn scoring multipliers for playing several consecutive notes or phrases correctly, and by correctly completing marked phrases, players can earn Star Power which can be released for a higher scoring multiplier. If players miss too many notes, they will eventually fail the song and will have to retry it.

Lead developer Alan Flores has stated that the difficulty of the game is much harder than previous games and is designed to challenge the hard-core player. To meet the "ferocity" of Metallica's songs, the game features, in addition to the same five difficulty levels in World Tour, an "Expert+" mode for drummers that allows them to add a second bass drum pedal, though results of this mode are not tracked through online modes. Additional drum pedals and a splitter, to allow two pedals to be used, were made available upon the game's release and as part of pre-ordering bonuses. While the game allows two guitar players to play lead and bass guitar, it does not give the players the option to play lead and rhythm guitar, which does not allow for notable "Hetfield/Hammett riff-trading" on certain songs. Lead designer Alan Flores explained that the decision not to track the lead and rhythm (in addition to the single player guitar, bass, drums, and vocals) "was simply a workload issue."

Similar to Guitar Hero: Aerosmith, Metallica presents songs from Metallica's history roughly in chronological order, but it focuses more on the group today than the band's history. The songs in the game are presented in a linear series of sets as with older Guitar Hero games such as Guitar Hero III: Legends of Rock, instead of the gig progression used in World Tour. However, instead of being required to finish a certain number of songs in each set, the player has to earn a total number of stars (earned from their performance on the individual songs) in a given set to progress to next one. The game's story is based on a band that wants to follow in Metallica's footsteps, and the group accepting them as leading acts for them on a tour; as such, they are better able to order the songs in difficulty comparable to other Guitar Hero games, as Metallica's earlier works frustrate the player enough to "throw the controller against the wall and stop playing". Flores described the difficulty for most of the game to be comparable to Guitar Hero: Aerosmith and World Tour after the complaints of the difficulty level in Guitar Hero III, but further noted that the most difficult songs in the games will be very challenging. Real-life venues are used for the game, including The Stone nightclub in San Francisco, the Hammersmith Odeon in London, Tushino Airfield in Moscow, and The Forum in Los Angeles, and one final venue representing the pinnacle of Metallica's success. The game was completed before Metallica's induction into the Rock and Roll Hall of Fame, and thus does not include reference to this event. The game's interface remain similar to World Tour with some Metallica-based artwork added to it. Three changes have been made from World Tour; individual performance and Star Power meters are now located next to each track on screen instead of grouped together to make it easier to keep track of one's own performance, and when the band's performance is failing, the edges of the screen glow red to indicate this. Furthermore, the score and note streak counters have now been moved to the right side of the screen, with the addition of the star counter.

The music creation mode from World Tour is available, giving the player the option of using tones from Hetfields' ESP Truckster guitar and Slayers Tom Arayas ESP Bass in addition to Metallica drum sounds. The "GHTunes" services, which allows players to share songs created in the music creation mode, is cross-compatible with both World Tour and Metallica. In the new "Drum Over" mode for this game, players can select any song, and play drums without any fixed drum track or without any failure, allowing them to create their own drum line using the song's existing drum kit sounds.

The Battle mode of the game, based on that from Guitar Hero III: Legends of Rock, has been slightly altered to add Metallica influences; for example, a power-up named "Fade to Black" completely blackens the note tracks for the opposing player, "Trapped Under Ice", which freezes the whammy bar, and an electrical attack called "Ride the Lightning" (based on the "Amp Overload" attack from Guitar Hero III) is added.

Development Guitar Hero: Metallica was revealed to be in production when an analyst for Wedbush Morgan Securities discovered mention of the game in Activision's 2008 SEC filings, slated to be released in "fiscal 2009". The band was approached in April 2008, who quickly agreed to the game as a "no brainer". Development for the game began in the second quarter of 2008, according to lead designer Alan Flores. Two posts made to Metallica's website in June 2008 also referred to the "not so top secret GH thing", and that Guitar Hero players could expect "a pile of 'Tallica songs." Lars Ulrich, when asked about the game during an interview with MTV, stated that "the people at ‘Guitar Hero’ and Activision are rapidly becoming our best new friends in the world. You can put the rest of it together yourself." Ulrich stated that the idea for the Metallica-themed Guitar Hero game came from the influence the original Guitar Hero games had on Ulrich and James Hetfield's children, learning about music and older bands such as Deep Purple and Black Sabbath.

The game was officially announced at the 2008 E3 conference during Microsofts presentation, along with the announcement that Metallica's newest album, Death Magnetic, would be made as content for download for both Guitar Hero III: Legends of Rock and Guitar Hero World Tour. A trailer for the game is included as an extra feature in Guitar Hero World Tour with "Master of Puppets" playing in the background and "Ride the Lightning" as the tagline.

As with Guitar Hero: Aerosmith, members of Metallica, including Kirk Hammett, Lars Ulrich, James Hetfield and Robert Trujillo performed six songs and band and audience chatter for motion capture for their in-game avatars; the detailed motion capture included the band's lip syncing to the lyrics and the motion of Trujillo's hair braids. Ulrich and Hetfield performed additional motion capturing sessions to help the developers. Metallica members appear as their modern day incarnations, but unlockable skins are available to reflect the band's history. Former band members Jason Newsted and the late Cliff Burton are not represented in the game as the band felt their inclusion would slight Trujillo. However, the game still includes trivia about both former members. The game includes DVD-style content such as photos, videos, and behind-the-scenes footage, as well as "Metallifacts", Pop-up Video-style trivia displayed on screen during the various Metallica tracks. Some Metallica songs in the game have an accompanying video of the band performing the song, with the quality ranging from fan-made videos at small clubs to large-scale video productions. Both Motörhead vocalist/bassist Lemmy and Mercyful Fate singer King Diamond have contributed to the game in both providing motion capture for unlockable player characters and providing re-recorded tracks of their songs "Ace of Spades" and "Evil", respectively due to the original master tapes not being located for use in the game's production. King Diamond's notable face makeup and jewelry was altered with direct input from King Diamond to avoid offending the religion of any of the business partners involved with the game.

During the game's development, the team encountered problems trying to create the drum tracks. Flores noted they normally try to map a note for every drum beat but could not easily replicate it for the double bass often used in Metallica's songs. As a result, they decided to create a splitter for the bass drum pedal and offer a second pedal with the game to allow the double bass kicks to be retained. The game's career mode, in which the players are part of an opening band for Metallica, is based on a real-life group that followed Metallica during a European tour, eventually becoming enamored by the band and performing in an opening act with them.

No plans have been announced for special bundled versions of Guitar Hero: Metallica with the instrument controllers within North America, though Activision does plan to release Metallica-branded faceplates for existing instrument controllers as well as a double-bass pedal attachment for the drum controller. Guitar Hero: Metallica will also support the wireless microphones from Lips through a future title patch. A European-exclusive bundle includes the game, wireless guitar controller, and Metallica faceplate.

Promotion Players that pre-ordered Guitar Hero: Metallica through GameStop stores received a second kickpedal with pre-orders. Other stores offered Guitar Hero: Metallica-branded drumsticks with pre-orders.