PONG
First to 11 wins. Left paddle: W/S. Right paddle: ↑/↓ (or the CPU).
About Pong
The one that started it all — 1972's paddle-and-ball classic. Play against a beatable CPU opponent, or pass the keyboard for local 2-player (Player 1 uses W/S, Player 2 uses the arrow keys). First to 11 points wins.