Stop Them All is a gorgeous casual game. The controls could not be simpler. All you have to do is tap the Activate button when you want the trap to start its action or movement. The key is to focus and tap the screen at the exact right moment. Otherwise, some of the characters will continue on their way and it will be more complicated to take them down before they reach the finish line. Are you willing to start playing to stop them all?
Tap or click.