Tetris:

Most people have come to play Tetris® through hours of button-prodding on the Game Boy. But the real hero is one Alexey Pajitnov: a Russian genius with too much time on his hands and an affinity with beards, and N-Blox is my tribute.

controls:

Use your mouse to click 'Play', then choose a level to start at. Up arrow to rotate shapes, Down/Left/Right arrow keys to move shapes, press P to pause.