:(
simple variables, basic math, resize actor, variables, functions, simple conditionals, actor properties, advanced motion, simple events, expert math, miscellaneous, lists, visibility, platformer automations, simple sound playing, expert physics, simple loops, platformer basics, direction and turning, advanced math, simple motion, cloning, advanced costume handling, advanced control, advanced animation, advanced physics, platformer controls, music and instruments, advanced messaging, delays, layers, advanced loops, simple messaging, simple drawing, graphic effects, conditional loops, pen color, detect conditions, pen size, shape drawing, screen bounds, touching actor, program control, stage property, pen shade, string handling, timer,