TheSmartAss.info's suite of Java emulators allows smooth, in-browser playback of literally thousands of old-school video games: 517 Atari titles, 148 for DOS, 636 Game Boy games (and 410 for Game Boy Color), 2,019 (!) NES titles, 238 GameGear games, 802 Sega Genesis titles, and 284 for the Sega Master System. Highlights include Space Invaders, Frogger, Galaga, Pitfall!, Super Mario Bros., The Legend of Zelda, Metroid, SimCity, Zero Wing, Duke Nukem, Sonic the Hedgehog, Aladdin, Earthworm Jim, Pokemon, and Metal Gear Solid. Use the search function to find your favorites! You can also register an account to save games on emulators that support it. Make sure to check the purple bar below each game for control info and links to alternate emulators in case the default one is buggy or slow.
posted by Rhaomi on Nov 30, 2009 - 54 comments

A chimpanzee plays Ms. Pac Man (WMV, some Japanese)
posted by Blazecock Pileon on Sep 25, 2007 - 29 comments

M.U.G.E.N [wikipedia] is a 2D fighting game engine, originally developed by Elecbyte and released in 1999. The engine is highly customizable; characters, backgrounds, and sound files -- whether from existing games or original works -- can be easily integrated. Some examples of the engine in action [youtube]: Homer Simpson vs. Peter Griffin, Ryu vs Popeye, Green Power Ranger vs Osama Bin Laden, Fat Albert vs Juggernaut, Marvin the Martian vs. Duck Dodgers. Also, game crossovers: Homer in NES Land, Thunder Force III vs. Duck Hunt. [mi] WARNING: some of the videos are very loud.
posted by milquetoast on Jun 17, 2007 - 10 comments

Uptick in Cold War-like rhetoric making you a little nostalgic for the era of parachute pants and Members Only jackets?
A cabal of Russki comrades at some pinko university have been going around collecting and resurrecting disused Soviet-era arcade games, which became instantly obsolete with the collapse of communism. Sea Wolf, Duck Hunt, Pole Position, Dogfight!
We begin bombing in five minutes.
posted by planetkyoto on Jun 7, 2007 - 28 comments

SHOOT THINGS - a retro-arcade-style shooter for Mac OS X. The author's page describes how it was written in 3 weeks for a contest - it's entertained me for considerably longer than that.
posted by ikkyu2 on Apr 22, 2007 - 31 comments

Handheld Simulators for all your retro-gaming needs. Game & Watch a-plenty or here for a java version to get the flavour without the download. Get stuck into Merlin and finally show you are superior to his complex brain, or revert back even further and snuggle up to an old friend with a speech impediment.
posted by Frasermoo on Aug 19, 2003 - 7 comments

Save pinball! "It's an American icon," said Stern, ever the salesman. "Pinball is cool because it is retro. It's a Volkswagen bug, a PT Cruiser, khaki pants."
posted by justgary on Aug 3, 2002 - 23 comments

MAME - I'm Gonna Live Forever (Flash link) I found this on the author's Tehkan World Cup site. It's an amusing trip down the MAMEory lane of classic arcade games. How many can you name?
posted by SiW on Nov 1, 2001 - 8 comments