Now let's build a game. Biff needs to collect 5 power cells. One complication... the moon base is crawling with space ghosts! Avoid the ghosts while collecting 5 power cells to win the game. But watch out! Touch a ghost and you will lose your health.Shoot one and gain points.R for rockets,B for bombs,Space Bar for Laser gun.
functions, simple messaging, simple events, advanced costume handling, simple sound playing, simple loops, basic math, visibility, graphic effects, delays,