American Gladiators is a video game made in 1991 by for the Amiga, Sega Mega Drive/Genesis, Super NES and Nintendo Entertainment System. It is based on the popular TV game show, American Gladiators.

Antarctic Adventure, known in Japan as Kekkyoku Nankyoku Daibōken (けっきょく南極大冒険) is a video game developed by Konami in 1983 for MSX, and later for video game consoles, such as NES. The player takes the role of an Antarctic penguin, racing to disparate research stations owned by different countries in Antarctica. The gameplay is similar to Sega's Turbo, but plays at a much slower pace, and features platform game elements. The penguin, later named Penta, must reach the next station before time runs out while avoiding sea lions and breaks in the ice. Throughout the levels, fish jump out of ice holes and can be caught for bonus points. The game, like many early video games, has no ending – when the player reaches the last station, the game starts from the first level again, but with increased difficulty.

Anticipation is a video game for the Nintendo Entertainment System developed by Rare that was released in 1988. It is playable as a single player with computer-controlled players or multiplayer with support for up to four players.

Arch Rivals is a basketball arcade game released by Midway in 1989. Billed by Midway as "A Basket Brawl", the game features two-on-two full court basketball games in which players are encouraged to punch opposing players and steal the ball from them. Arch Rivals allows players to select from a variety of fictional teams (although arcade operators can change the team names to reflect real ones) and players. One playable character, "Tyrone" was also featured in the animated Power Team segments of the television series Video Power. Home versions of the game were released for the Nintendo Entertainment System, the Sega Genesis/Mega Drive as well as the Game Gear. Emulated versions of the game were included in the compilations Midway Arcade Treasures 2, Midway Arcade Treasures Deluxe Edition, and Midway Arcade Origins. The game has been considered a forerunner to Midway's popular arcade basketball game, NBA Jam.

Archon: The Light and the Dark is a 1983 video game developed by Free Fall Associates and one of the first five games published by Electronic Arts. It's similar in concept to Chess, except that landing on another player's piece results in an arcade-style fight to determine the victor.Archon was originally developed for Atari 8-bit computers, then ported to the Apple II, Commodore 64, Amstrad CPC, ZX Spectrum, Amiga, IBM PC, Apple Macintosh, PC-88, and NES. It was designed by Paul Reiche III (who also created the graphics for the game) and Jon Freeman, and programmed by Anne Westfall.A sequel was released in 1984: Archon II: Adept.

The Arctic (/ˈɑrktɪk/ or /ˈɑrtɪk/) is a polar region located at the northernmost part of the Earth. The Arctic consists of the Arctic Ocean and parts of Canada, Russia, the United States (Alaska), Denmark (Greenland), Norway, Sweden, Finland, and Iceland. The Arctic region consists of a vast, ice-covered ocean, surrounded by treeless permafrost. The area can be defined as north of the Arctic Circle (66° 33'N), the approximate limit of the midnight sun and the polar night. Alternatively, it can be defined as the region where the average temperature for the warmest month (July) is below 10 °C (50 °F); the northernmost tree line roughly follows the isotherm at the boundary of this region. Socially and politically, the Arctic region includes the northern territories of the eight Arctic states, although by natural science definitions much of this territory is considered subarctic. The Arctic region is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme conditions. In recent years the extent of the sea ice has declined. Life in the Arctic includes organisms living in the ice, zooplankton and phytoplankton, fish and marine mammals, birds, land animals, plants and human societies.

Arkanoid (アルカノイド, Arukanoido?) is an arcade game developed by Taito in 1986. It expanded upon Atari's Breakout games of the 1970s by adding power-ups, different types of bricks, and a variety of level layouts. The title refers to a doomed "mothership" from which the player's ship, the Vaus, escapes.

Arkanoid (アルカノイド, Arukanoido) is an arcade game developed by Taito in 1986. It expanded upon Atari's Breakout games of the 1970s by adding power-ups, different types of bricks, and a variety of level layouts. The title refers to a doomed "mothership" from which the player's ship, the Vaus, escapes.