Make an interactive slideshow. Detecting and making background changes isn't limited to slideshows. How can you use this concept to tell stories?
advanced physics, expert physics, advanced motion, lists, visibility, simple motion, simple events, simple costume handling, basic math, basic physics, screen bounds, advanced costume handling, conditional loops, simple sound playing, level design, delays, advanced animation, simple loops, simple conditionals, input/output, resize actor, direction and turning, music and instruments,