Great computure programme that can play all the classic console game system games from: snes, nes, atari.ect.But it costs you money to get an emulator.(the best thing to do is get a burned version from a friend who has already got one, like I did, lol) It also slows your computure right down. But its great fun. You can change the colours of the games you play. You can play the games with a special controler. You can also get weird versionnof games, like sonario which is a sega sonic game with mario as sonic. It's so cool. The roms are illegal but who cares, no one is gonna care.
NESten is one of the many emulators you can get.