Assault Suit Leynos is a side-scrolling sci-fi arcade action game. The game is a re-release of the popular Assault Suit Leynos for the Sega Mega Drive. You have to plunge into a robot war and destroy enemy armies. The Earth's population is suffering from the consequences of the Fourth World War, resources are depleted, but thanks to a shaky international truce, humanity begins to explore space. Colonies are being built, resources are being mined, and a bright future is coming. It seems like peaceful times have arrived, but an unknown enemy appears from the depths of space, threatening to destroy all of humanity. Only one thing can stop him — the landing of the Assault Suit assault squad.