Now let's build a game. Zombie needs to collect 20 gems. One complication... the moon base is crawling with Biffs! Avoid the Biffs while collecting 20 gems to win the game. But watch out! Touch a Biff and you will lose your health. (But you're undead anyway so..)
functions, simple messaging, simple events, advanced costume handling, simple sound playing, simple loops, basic math, visibility, graphic effects, delays,