Heavy Metal Machines (HMM) is a car battle MOBA video game developed and published by Hoplon Infotainment. HMM is a free to play game available on Steam, where teams of four highly armed machines battle on arenas with a post-apocalyptic scenario. The primary objective is to deliver a bomb on the enemy team base while trying to overcome your opponents and avoid the arena's hazards. The overall theme of the game is based on Heavy metal music and its culture. The game has been in production since 2013 and was officially launched on September 19, 2018.