Game is just an ad mine, it is set up so that the first couple times you will fail, and to either retry or revive you'll have to watch an ad, it's a music game where you have hp, and so little of it hard levels are set up where you have 1hp so if you mess up once it's game over back to watching ads, and it's not even a battle cause you're playing notes for both you and the person you're "battling" so the chances of failure are upped and you'll definitely spend more time watching ads then playing