Aegis of Earth: Protonovus Assault is a tactical tower defense game for the Sony PS3 where players manage and defend a post-apocalyptic city from relentless monster attacks. It combines real-time strategy with city-building elements. Players rotate districts to aim defenses and upgrade their city while balancing resources, all packed with anime-styled visuals and voice acting. Engage in intense, strategic battles by placing and upgrading a variety of defensive units in this mission to ensure humanity's survival.