In Onion Force, you must protect the last king. That involves setting up a careful defense system by selecting from the game’s eight available towers, slowly growing them over five power levels for maximum monster protection. For the ones that slip through, players can control one of three heroes, taking the fight to the enemy personally with their unique attacks.
Your heroes can grow stronger by picking up dropped equipment or by picking up valuable onions that can be traded for power-ups. Players can also choose to adjust the play speed should they find the game too challenging or too easy.