Gunhouse

Load your guns! Rain death from above! Protect your valuable orphans! Defeat giant, improbable bosses! Gunhouse is part puzzle, part active tower defense, as you make big combos to launch a hail of bullets and special attacks at the alien invaders who would like nothing better than to consume your delicious orphan friends. With infinite levels, upgradeable weapons, a unique art style, and music by Fez composer Disasterpeace, Gunhouse from Necrosoft Games is a cute, endless game that will chill you out and rile you up!

Source: PlayStation Store