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