Now let's build a game. Biff needs to collect 2 crystals. One complication... the ocean is crawling with lots of Biffs! Avoid the Biffs while collecting 2 crystals to win the game. But watch out! Touch a Biff 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,