Now let's build a game. Biff needs to collect 5 power cells. One complication... the moon base is crawling with zombies! Avoid the zombies while collecting 5 power cells to win the game. But watch out! Touch a zombie and you will lose your health. However, if you see a zombie coming, you can pull out your lasers and get rid of those zombies.
functions, simple messaging, simple events, advanced costume handling, simple sound playing, simple loops, basic math, visibility, graphic effects, delays,