Cute game! I like Jimi. You did a really good job choosing a decently small scope and sticking to it -- I wish there was a bit more variety in the upgrades (quadruple jump is funny, but I was really waiting for a "more gems spawn" or "you deal more damage to X enemy type" type thing), but I still stuck around until I knew I had unlocked them all (I decided that was my win condition). Great job!