The site is created by a company called Hipopotam Studios. It features 26 LCD games recreated in Flash and controlled by your keyboard. Some of the games listed are Donkey Kong, Parachute, Zelda, and The Terminator.
Some of these games are still pretty adictive, so i recomend to take a look
, also it´s a nice way to see a couple of games Nintendo did before the NES era.