This is a TD game with Madness characters as the enemies. As in any TD game enemies are trying to pass through your territory. Your goal is to build towers that will kill the enemies and will not let them reach their target. This is a pathless TD which means that there's no defined path for the enemies. They will try to find the shortest way to the exit. You can build towers the way they will block the enemies path making it longer and giving you more time to kill them..