Black ants are your friends, you need to help them to get back and avoid being eat by red ants, their enemies. Collect the stars on each level, press button Go when you are ready to let the ants out.
In the Roly-Poly Cannon Series Games, you have to shoot bombs to kill roly-poly happy faces by blowing them up. The goal of the games are eliminate all the Roly-Polys in each level, what you need to complete the tasks is your trusty cannon.