Altered Beast

Sega

Industry	Video game development and publishing
Founded	June 3, 1960 (1960-06-03) in Japan
Founder	Martin Bromley, Irving Bromberg, and others
Headquarters	Tokyo , Japan
Products	Video games, video game consoles, arcade machines
Website	www.sega.com

Altered Beast is a 1988 beat 'em up video game created and released by Sega for arcade machines. Set against the backdrop of Ancient Greece, the storyline centers on the player's role as a champion chosen by Zeus to save his daughter Athena from the clutches of the underworld's ruler, Neff. Throughout each level, gathering three power-ups enables the player to transform into one of five mystical creatures. The title was adapted for numerous home video game consoles and home computers, and was notably included as a pack-in game for the launch of the Genesis in North America and the Mega Drive in Europe.

The development team was led by Makoto Uchida, utilizing Sega's System 16 arcade hardware platform.

Upon release, Altered Beast earned generally favorable critiques for its gameplay mechanics and graphical presentation. It has since been reissued on multiple systems and inspired both a sequel and a reboot.

Gameplay

Altered Beast presents a side-scrolling beat 'em up experience with minor platforming elements. The game comprises five stages that support either solo or cooperative two-player modes. Battles take place in locations inspired by Ancient Greece, inhabited by undead foes and monsters drawn from Greek mythology. Each stage concludes with a confrontation against the demonic deity Neff. Short animated sequences between levels illustrate Athena’s ongoing danger. Players are equipped with basic actions such as punching, kicking, and jumping.

The narrative follows Neff’s abduction of Athena, prompting Zeus to resurrect a Roman Centurion who becomes the protagonist charged with her rescue. Notably, the arcade version’s credits reveal that the entire adventure is framed as a staged film production.

Defeating white two-headed wolves drops Spirit Ball power-ups that enhance the character's size and strength. Collecting three Spirit Balls triggers a transformation into a formidable beast form with superior combat capabilities before facing Neff. These beast forms include weredragon, werebear, weretiger, werewolf, and golden werewolf, each endowed with distinct powers such as lightning strikes, petrifying breath, or fireball attacks. The Famicom edition expands this roster by adding shark, lion, and phoenix transformations.

Development

The project was helmed by director Makoto Uchida, who cited influences such as The Howling, Michael Jackson’s "Thriller" music video, and Ray Harryhausen’s cinematic works. He selected an Ancient Greek setting to complement the powerful characters he envisioned. As Uchida’s debut title as director, he relied extensively on his lead programmer to fine-tune gameplay balance.

To achieve striking visual effects, Uchida assigned the lead artist exclusively to develop transformation sequences for the player character over an entire month. The development team leveraged Sega’s System 16 arcade system board to produce large, detailed character sprites, incorporating dynamic effects such as dismemberment during combat. When initial concept art failed to meet his expectations, Uchida took it upon himself to create character sketches personally; this decision led to the departure of his lead designer. The game also includes hidden references to other System 16 titles like Alex Kidd: The Lost Stars and Shinobi, paying homage to previous projects by team members.

Originally planned features included a pressure-sensitive button mechanic; however, due to patent complications and insufficient demand, this element was scrapped. Consequently, roughly half of the intended character moves were removed. Uchida felt this reduction might have contributed to players losing interest sooner than expected but remained satisfied with positive feedback from playtesting.

Releases

Initially launched in June 1988, the arcade edition of Altered Beast achieved greater acclaim internationally than within Japan. Its overseas success prompted its selection as the bundled title for the Sega Genesis and Mega Drive systems across North America and Europe. Although Uchida did not directly oversee these conversions, he provided guidance and expressed confidence due to the Genesis hardware's close resemblance to System 16. The pressure-sensitive button feature was omitted in these versions because of hardware constraints and tight development timelines. Notably, the game was not included as a pack-in title in Japan; by the time Uchida visited the United States three years later, Sonic the Hedgehog had taken its place, largely influenced by regional sensitivities towards themes involving zombies and magic, particularly in areas such as the Bible Belt.

Beyond the Genesis and Master System adaptations, Altered Beast was also ported to a variety of platforms including PC Engine, PC Engine-CD, Famicom, Atari ST, Commodore 64, ZX Spectrum, Amstrad CPC, and Amiga. Several European ports were developed by Activision. Certain versions, like that for the Master System, excluded some levels. The Famicom release, developed by Interlink and distributed exclusively in Japan by Asmik Corporation, introduced distinctive transformations such as humanoid lion, shark, and phoenix forms, along with additional stages. Due to competitive dynamics, Sega refrained from publishing on Nintendo consoles.

The Genesis iteration has been featured in multiple collections including Sega Smash Pack, Sega Genesis Collection, and Sonic's Ultimate Genesis Collection, with the latter two offering the arcade version as an unlockable bonus. Digital reissues have appeared on platforms such as Wii Virtual Console, Xbox Live Arcade, PlayStation Network for PS3, and mobile devices through the Sega Forever series since 2017. A 3D adaptation for the Nintendo 3DS eShop was developed by M2. Furthermore, it comes pre-installed on the SEGA Genesis Mini and has been accessible via Nintendo Switch Online since December 2021.

Reception

In July 1988, Altered Beast ranked as the second top-grossing arcade game in Japan.

Critical response upon its arcade debut was mixed. Commodore User described it as "a clever game, and well worth a few tens of anybody's money," whereas Computer and Video Games criticized the storyline as unoriginal and characterized the visuals as "large and clumsily drawn." While Your Sinclair dismissed it outright, Crash commended its graphics as "nifty" and found the gameplay engaging despite repetitive elements. The Games Machine acknowledged that although it lacked visual impressiveness compared to titles like Out Run or Space Harrier, its gameplay compensated sufficiently.

Reactions to various ports were diverse. The Mega Drive version received praise from The Games Machine for closely replicating the arcade experience and was hailed by ACE (magazine) as the premier Mega Drive title at that time. Conversely, Sega Power criticized it for choppy gameplay and unsatisfactory scrolling performance. The PC Engine CD port was regarded as disappointing by The Games Machine, which recommended opting for the Mega Drive edition instead.

The Master System conversion drew criticism from Computer and Video Games for downgraded graphics, sluggish pacing, and collision detection flaws; similarly, The Games Machine labeled it a "middling conversion." On a more positive note, Electronic Gaming Monthly acknowledged that it preserved much of the arcade mechanics effectively. Meanwhile, Sega Pro lamented its inferiority compared to the successful Mega Drive version; S: The Sega Magazine pointed out poor animation quality and control issues despite an acceptable soundtrack.

Ranked #10 among the worst Mega Drive games by Mega (magazine), its Wii Virtual Console re-release received lukewarm reactions from both GameSpot and IGN, who cited moderate nostalgic value but overall mediocrity. The Xbox Live Arcade edition faced similar dismissal from IGN, which regarded it as an outdated title unable to stand up to modern standards.

Legacy

Video game journalist Ken Horowitz observed that players commonly recognize the iconic "rise from your grave" introduction of Altered Beast, even if they are not deeply familiar with Sega’s catalog. He attributed its enduring appeal to a distinctive charm that was somewhat diminished in the Genesis adaptation, calling it "one of Sega’s more memorable concepts." Uchida expressed surprise at how his arcade creations have maintained popularity over time, noting continued player engagement with both Altered Beast and Golden Axe in American arcades—highlighting sustained demand for quality gaming experiences.

Sequels

Two sequels followed after the original release. Developed by 3d6 Games and published by THQ in 2002 for the Game Boy Advance, Altered Beast: Guardian of the Realms preserved much of the classic arcade style while adding new power-ups, beast transformations, and fifteen levels. Despite graphical enhancements, its fundamental side-scrolling gameplay remained intact. In 2005, Sega launched Jūōki: Project Altered Beast (Japan) / Altered Beast (Europe) on PlayStation 2; although planned for North America release, this version was ultimately canceled. This installment departed from the original storyline by adopting a darker tone with increased violence set in a contemporary environment. Uchida provided advisory input during development and noted that American marketing strategies encouraged emphasizing violent content. Reviews were mixed due to camera difficulties and substandard graphics.

Film adaptation

In 2014, Sega collaborated with Evan Cholfin to develop film and television projects based on their gaming properties. A live-action film adaptation of Altered Beast was announced in 2016; however, as of 2025, no production progress has been reported.

Popular culture

The influence of Altered Beast extends into various cultural domains. In 1993, musician Matthew Sweet named his album Altered Beast, explaining that the title symbolized an inner strength emerging unexpectedly—paralleling the game's power-up mechanic. The character Neff’s Rhino form appears as a final boss cameo in Disney’s 2012 film Wreck-It Ralph, alongside other iconic figures such as Sonic’s Doctor Eggman.

King Gizzard & the Lizard Wizard’s 2017 album Murder of the Universe features a suite titled ‘The Tale of The Altered Beast’, containing lyrics alluding to Neff’s hybrid nature.

Competition

On October 31, 2019, ZeeGee_ from New York set a world record for completing a speedrun of Altered Beast on Sega Genesis at six minutes ten seconds. Thu_ox secured second place with six minutes twelve seconds on the Wii Virtual Console version. Apostle Studios holds the highest recorded score at 6,621,500 points on Sega Genesis; Samuel Clemens ranks second with 1,008,300 points on PlayStation 4 as of July 19, 2022.