Pong (1973) v1.1 - GIP
Player 1 (left) uses W/S to move.
Player 2 (right) uses up/dn arrow to move.
Press space to start the game.
Game restarts after a 2s pause after a score.
First to 10 wins.
Based of the 1973 standard Pong game.
Uses very basic physics reflection for ball "bounce"