React to key prompt and don't stop running. The faster your time the higher your score

Press left arrow to move left, right arrow to move right. Blast your enemies by press spacebar to fire laser. …

Feed the eagle and stay alive and don't get yoruself eaten by bigger birds

Control thel Midget Walker to kill as many people as possible

This is more like a simulation than a game. The objective is to create as many chain reactions as possible.