Ugly Monsters is a simple strategy game. Behind each arrow sits a green monster who doesn't mind saying hello, as long as you only ask him to do so once. The arrows point to which monster will turn around. If you touch an arrow that points to a monster that has already turned around, the monster (being the nervous little nerd he is) will turn yellow with fear. Touch an arrow that points to a yellow Square and you will be killed by an angry monster.
Each game starts with five "shakes" which can be used to change the direction of the remaining arrows. Every 5 levels you pass will earn an additional shake. You can also undo your last move as long as you have shakes available.