Biff is going to stop the zombie apocalypse. But tell that to the waves of zombies! Help Biff by using his huge arsenal of rockets(use the "z" key), lasers(use the "x" key), and bombs(use the "c" key). Be sure to not be fooled by the harmless zombie(that might only show up on my computer).
functions, simple messaging, simple events, advanced costume handling, simple sound playing, simple loops, basic math, visibility, graphic effects, delays,