Circle Protector is a free-to-play game developed by Mousetrap Games for Android users. It is an addictive, fun casual game that combines elements of bullet hell shooter and brick breaker classic. You can choose your favorite hero and protect your circle with a customized shield.

The game is set in space, where you have to defend your circle against comets, bullets, and other space objects. You need to collect oxygen to survive and activate Supernova to win. The gameplay is simple and intuitive. Swipe the shield to deflect the flying bullets, but remember to let the oxygen in to reach higher levels.

Circle Protector has different heroes and shields to unlock. You can also discover bonus levels and play in endless mode. The game is challenging, and you need to be quick to react to survive. The power-ups make the game more interesting and fun. Overall, Circle Protector is an entertaining game that offers a unique blend of action and strategy.