Shoot the aliens before they shoot you! CONTROLS: -Arrow keys to move -Space bar to shoot FACTS: -Ten lives -Three levels -Powerup
simple events, visibility, delays, variables, simple loops, variable watchers, simple sound playing, simple messaging, simple conditionals, advanced costume handling, cloning, detect conditions, resize actor, graphic effects, advanced motion, simple motion, advanced messaging, simple variables, basic math, conditional loops, simple costume handling, direction and turning, advanced math, layers, program control, screen bounds, miscellaneous,