 Points are awarded for trapping aliens behind doors (with extra points going to players who corral multiple aliens behind one door) and collecting confectionery that intermittently appear and disappear on the playing screen, which include a striped piece of candy, an ice pop, a lollipop, a bowl of ice cream, a slice of cake, and a Mahjong tile.Players begin with three lives.Scoring 10,000 points awards the player an extra life; scoring intervals of 20,000 points thereafter awards the player more lives.