Meet spaceman Biff. He is in a New York park, and needs 10 crystals to power his spaceship. But, watch out for zombies, because you only have 1 life. Press the spacebar to fire a laser, press c to fire a rocket, and press v to leave a bomb trap! Have fun!
advanced costume handling, simple sound playing, functions, simple loops, basic math, simple messaging, simple events, visibility, graphic effects, delays,