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One of the most popular games of TheGoldenAgeOfVideoGames. Debuting in 1979, it first appeared in the arcade, but was quickly ported to the UsefulNotes/{{Atari 2600}}, and has made its way onto most platforms since.

You control a ''VideoGame/{{Spacewar}}''-style ship in the middle of an [[TheAsteroidThicket asteroid field]]. All around you, asteroids are floating around. You get points for shooting them; the smaller the asteroid, the more points you get. But each time you shoot any but the smallest, [[AsteroidsMonster they split in two]], and the trajectory is different for both. Oh, and you have to avoid [[EverythingTryingToKillYou getting hit by an asteroid.]] Or shot by an enemy ship that wanders by. In a pinch, you can press the panic button and travel through {{hyperspace}} to a random location... which may not be any better. (In the sequel, ''Asteroids Deluxe'', you get {{deflector shields}} instead.)

If you were looking for a page about ''actual'' asteroids, see AsteroidThicket.
* AsteroidsMonster: The TropeNamer. The asteroids will split in two twice, before breaking into fragments small enough to be destroyed with one shot.
* DeflectorShields: The follow-up game ''Asteroids Deluxe'' replaced Hyperspace with Shields.
* EveryTenThousandPoints, the player is awarded an extra life.
* EverythingTryingToKillYou
** Even your own technology (see RandomTransportation below). In the 2600 version, you can choose to play with DeflectorShields instead of hyperspace (similar to Asteroids Deluxe), but using the shields for more than two seconds blows up your ship.
* ExactlyWhatItSaysOnTheTin: You want a game with asteroids? Then ''Asteroids'' is the game for you.
* FollowTheLeader:
** ''Meteors'', a shameless near-exact copy for the Acorn Archimedes 7000.
** Also, ''VideoGame/{{Astrosmash}}'' for the UsefulNotes/{{Intellivision}} started out as a clone of Asteroids called Meteor[[ExcitedShowTitle !]] (and the original version can still be found [[EasterEgg hidden within the final version of the game]]).
** ''VideoGame/CometBusters'', a Windows 3.1 clone that added simultaneous multiplayer, which ended up being its most popular trait. The clone status was lampshaded in its help file, describing the game as "based upon the popular game A*teroids" and opening the rules section with "Rules!?!? Don't tell me you haven't seen this game before...!"
* InNameOnly: ''Asteroids: Outpost'' as a first-person shooter. The only thing remotely close to the original is shooting the meteor-like objects ''VideoGame/MissileCommand''-style.
* NoPlotNoProblem: Here's a spaceship. Now shoot some rocks and flying saucers in space. Nothing more is needed for this game.
* RandomTransportation: Hyperspace is used as an emergency escape, sometimes dropping you right in front of another asteroid.
* SongsInTheKeyOfPanic: An early example, the "heartbeat" sound gets faster as each wave goes on.
* UpdatedReRelease: Activision released [[http://www.ign.com/articles/1998/11/14/asteroids-3 an enhanced version]] in 1998 for the UsefulNotes/PlayStation, [[{{Nintendo64}} Nintendo 64]], UsefulNotes/GameBoyColor and UsefulNotes/MicrosoftWindows in 1998, featuring massively updated gameplay, graphics and sound.
* WrapAround: 4-directional.