Get ready for a massive monsters invasion. Welcome to the Monsters' House! The monsters keep coming out from behind the doors. They will never stop. The objective of this endless game is to hold the invasion by removing the monsters from the game field. Combine monsters of the same color in the groups of four and they will come back to the Monsters' House filling some space for a while and giving you scores. To proceed to the next level you must score a certain number of points. After each level new types of monsters appear and the game gets harder and harder.