Now let's build a game. Biff needs to collect 5 power cells. One complication... the terrorized city is crawling with zombies and flying ghosts! Avoid the zombies and ghosts while collecting 5 power cells to win the game. But watch out! Touch a zombie/ghost and you will lose your health.
functions, simple messaging, simple events, advanced costume handling, simple sound playing, simple loops, basic math, visibility, graphic effects, delays,