A Bug's Life is an unlicensed port of the Game Boy Color game of the same name, made for the Super Nintendo and the Sega Genesis by an unknown developer at an unknown date. (It is known that this bootleg came out to the public after May 1999, as that is when the GBC version came out, of which this is a port of.)

A generic Sonic 1 ROMhack is a hack based on sonic 1 made by CHRdutch. The hack focus on level design. It's goal it to make the levels feel fresh even though you're playing through the same zones again.Credits:Help with fixing bugsMarkeyjesterNatsumiMainMemoryLuigiXhero

A-Ressha de Ikou MD is a Strategy game, developed by M.N.M Software and published by Sega, which was released in Japan in 1992.

Aaahh!!! Real Monsters is a platform arcade style video game developed by Realtime Associates and published by Viacom New Media in 1995 for the Sega Mega Drive/Genesis and SNES based on the American cartoon series of the same name on Nickelodeon.

Aa Harimanada (ああ播磨灘?) is a Japanese media franchise that began with a 1991 manga by Kei Sadayasu published in Kodansha's Weekly Morning. A television anime series was broadcast in 1992. The series was later adapted to a video game developed and published by ASK for the Game Boy, Sega Game Gear, and Sega Mega Drive. It was released in Japan on July 23, 1993.

Abrams Battle Tank, aka M-1 Abrams Battle Tank for the Sega version, is a computer game developed by Dynamix and published by Electronic Arts in 1988 for DOS. It was later ported to Mega Drive in 1991 by Realtime Games Software. Designed by Damon Slye, the game is a 3D vehicle simulation of the M1 Abrams tank, one of the first on the market.The port from DOS to Sega Genesis was performed by Realtime Games Software Ltd in the UK using their own 3D games engine that was earlier used in Carrier Command with some tweaks to adapt it to the Genesis and the needs of the tank scenario.Although the simulation depicts the four crew positions, and is advertised as a simulation, gameplay is not actually very realistic; the missions are arcade game-like with a fixed sequence of actions to perform.[1] The graphics were very good for their time, but reviews are mixed, with many players enjoying the "fun factor" introduced by the lack of realism, and others decrying it for the same reason.

Action 52 is a multicart of 52 original games, developed by FarSight Technologies Inc. in 1993. It is considered of much better quality than the NES version.

The Addams Family is a platform game released by Ocean in 1992.[4] The game was released for Sega Mega Drive / Genesis, Super NES, Amiga and Atari ST. It is based on the 1991 movie of the same name. Other titles based on the film were released for other platforms.

Addams Family Values is a game released for the Super Nintendo and Sega Mega Drive. It is based on the second movie adapted from the original television series The Addams Family.

The Adventures of Batman & Robin is a 1994 and 1995 video game based on the popular DC Comics characters Batman and Robin and specifically the critically acclaimed animated cartoon Batman: The Animated Series (which had been renamed The Adventures of Batman and Robin for its second season at the time of the game's production). There are several releases of the video game for the different consoles in the market at the time, namely the Mega Drive/Genesis, Game Gear, and Mega-CD/Sega CD versions were published by Sega while the Super NES one was published by Konami.

The Adventures of Rocky and Bullwinkle and Friends is a video game released by THQ inspired by The Rocky and Bullwinkle Show. The game consists of seven levels that take players through various locales: A Swiss Alps-style mountain, a cavern, a mine, a submarine, a haunted ship, a port town, and a castle. Mini-games are available at certain points that allows players to collect extra lives. These mini-games are Peabody and Sherman, where players control Sherman and blow bubble gum bubbles to clog a dragon's mouth, and Dudley Do-Right, where players ride a horse and avoided an ever-approaching train which is driven by Snidely Whiplash. The Game Boy version only had three levels, although generally with multiple sections. In that one, the first level, Frostbite Falls, has the player controlling Bullwinkle, the second, on the Moon, uses Rocky, and the final one, the Abominable Manor, uses Bullwinkle again. Before the final section, a bonus level that had Bullwinkle running to the end of a football field to catch Rocky, while avoiding and head-butting football players on the way, could grant the player an extra life upon completion. The final section always had a time limit to defeat the Fearless Leader and rescue your friend, dying in this three times would send the player back to the first section of the level. Despite the absence thereof, the game label still showed the "Friends" (e.g. Dudley Do-Right).