The Sega Genesis, known as the Mega Drive in regions outside of North America, is a 16-bit home video game console which was developed and sold by Sega Enterprises, Ltd. The Genesis was Sega's third console and the successor to the Master System.
 Sega first released the console as the Mega Drive in Japan in 1988, followed by a North American debut under the Genesis moniker in 1989.
 In 1990, the console was distributed as the Mega Drive by Virgin Mastertronic in Europe, by Ozisoft in Australasia, and by Tectoy in Brazil.
 In South Korea, the systems were distributed by Samsung and were known as the Super Gam*Boy, and later the Super Aladdin Boy.
Sega Channel was an online game service developed by Sega for the Genesis video game console, serving as a content delivery system.
 Launching in December 1994, Sega Channel was provided to the public by TCI and Time Warner Cable through cable television services by way of coaxial cable.
 It was a pay to play service, through which customers could access Genesis games online, play game demos, and get cheat codes.
 Lasting until July 31, 1998, Sega Channel operated three years after the release of Sega's next generation console, the Sega Saturn.
 Though criticized for its poorly timed launch and high subscription fee, Sega Channel has been praised for its innovations in downloadable content and impact on online services for video games.
The Sega 32X was an add-on for the Sega Genesis video game console.
 Codenamed "Project Mars", the 32X was designed to expand the power of the Genesis and serve as a holdover until the release of the Sega Saturn.
 Independent of the Genesis, the 32X used its own ROM cartridges and had its own library of games.
 A total of 40 titles were produced worldwide [36 NA games ("10 Exclusives"), 27 PAL ("2 Exclusives"), 18 JP ("1 exclusive"), and 1 game "exclusive" to BR], including six that required both the Sega 32X and Sega CD add-ons.
The Sega Saturn is a 32-bit fifth-generation home video game console that was developed by Sega and released on November 22, 1994 in Japan, May 11, 1995 in North America, and July 8, 1995 in Europe.
 The successor to the successful Sega Genesis, the Saturn has a dual-CPU architecture and eight processors.
 Its games are in CD-ROM format, and its game library contains several arcade ports as well as original titles.
The 32X is an add-on for the Sega Genesis video game console.
 Codenamed "Project Mars", the 32X was designed to expand the power of the Genesis and serve as a transitional console into the 32-bit era until the release of the Sega Saturn.
 Independent of the Genesis, the 32X uses its own ROM cartridges and has its own library of games.
 The add-on was distributed under the name Super 32X in Japan, Genesis 32X in North America, Mega Drive 32X in the PAL region, and Mega 32X in Brazil.
The Atari Jaguar is a home video game console that was developed by Atari Corporation.
 The console was the sixth and last programmable console to be developed under the Atari brand, originally released in North America in November 1993.
 Controversially, Atari marketed the Jaguar as being the first 64-bit video game console, while competing with the existing 16-bit consoles (Sega Genesis and Super Nintendo Entertainment System) and the 32-bit 3DO Interactive Multiplayer platform (which launched the same year).
The Sega Saturn (Japanese: セガサターン , Hepburn: Sega Satān ) is a 32-bit fifth-generation home video game console that was developed by Sega and released on November 22, 1994 in Japan, May 11, 1995 in North America, and July 8, 1995 in Europe as the successor to the successful Sega Genesis.
 The Saturn has a dual-CPU architecture and eight processors.
 Its games are in CD-ROM format, and its game library contains several arcade ports as well as original titles.
The Genesis Nomad (also known as Sega Nomad) is a handheld game console by Sega released in North America in October 1995.
 The Nomad is a portable variation of Sega's home console, the Sega Genesis (known as the Mega Drive outside North America).
 Designed from the Mega Jet, a portable version of the home console designed for use on airline flights in Japan, Nomad served to succeed the Game Gear and was the last handheld console released by Sega.
 In addition to functioning as a portable device, it was designed to be used with a television set via a video port.
 Released late in the Genesis era, the Nomad had a short lifespan.
The Sega Genesis, known as Mega Drive (Japanese: メガドライブ , Hepburn: Mega Doraibu ) in most regions outside North America, is a 16-bit video game console that was developed and sold by Sega Enterprises, Ltd. First released in Japan in 1988 and in North America in 1989, the Genesis is Sega's third console and the successor to the Master System.
 The system supports a library of more than 700 games created both by Sega and a wide array of third-party publishers and delivered on ROM cartridges.
 It can also play the complete library of Master System games when the separately sold Power Base Converter is installed.
 The Genesis also benefited from numerous peripherals, including the Sega CD and Sega 32X, several network services, and multiple first-party and third-party variations of the console that focused on extending its functionality.
 The console and its games continue to be popular among fans, collectors, video game music fans, and emulation enthusiasts.
 Licensed third party re-releases of the console are still being produced, and several indie game developers continue to produce games for it.
 Many games have also been re-released in compilations for newer consoles and offered for download on various digital distribution services, such as Virtual Console, Xbox Live Arcade, PlayStation Network, and Steam.
Iron Man / X-O Manowar in Heavy Metal is a video game published by Acclaim Entertainment and developed by Real Sports and Realtime Associates for the PlayStation, Sega Saturn, Game Boy, Game Gear, and DOS in 1996.
 It is a one or two-player side-scrolling arcade game in which the player battles various villains from the Iron Man and X-O Manowar comic book series.

Question: Who published the game Iron Man and X-O Manowar in Heavy Metal, for Sega's 32 bit game console?
Answer: Acclaim Entertainment