M.A.S.S. Builder — will tell you about an alien invasion, which aims to destroy our race. The authors of the project entrust you with the fate of civilization. Use the most advanced technology. A unique suit that can make you stronger, more invulnerable and faster. Customize this technical miracle, use every opportunity to reflect the attack. Try to find the perfect balance. Unique costumes are used to combat uninvited guests a wide variety of talents and creativity can be shown in the setting of this invention.

Mahou Arms is an anime-inspired slasher that tells the story of a paramilitary group of magical girls fighting against an alien invasion. The human race is on the verge of total subjugation by an alien force known as Castles. GARDA, the worldwide paramilitary organization, has finally found a way to fight back the magical girls. You are a commander in GARDA and a former prisoner of war. You must lead your little motley group to victory at all costs. Meet your new recruits at the base and gain direct control on the battlefield to reclaim Earth. Good luck, commander.