Vaporize as many ghosts of the same color as you can to get a high score, with cute halloween theme animations, bonuses, and sound effects. The more ghosts you tap at once, the more scores you will get. The more same color ghosts combo, the more scores multiply. Rule #1: 2 ghosts = 2 x 2 x 2 = 8. 3 ghosts = 3 x 3 x 3 = 27.