Download Project Nimbus totally free on our large servers, without any limitations, and this game is up to date. Project Nimbus is a high speed mech action game set in a post apocalyptic world. Players control 'Battle Frames' - humanoid battle suits armed with an arsenal of weapons. Project Nimbus is a high speed mech action game set in a post apocalyptic world. Players control 'Battle Frames' - humanoid battle suits armed with an arsenal of weapons.