I don't write reviews for apps very often, and when I do, it says something important about the app. This game is REALLY GOOD! Great graphics, idea, almost no adds, and has a lot of potential. I was just clowning around on the App Store and downloaded it just to see if it was like the other “meh” games that I would soon delete right after downloading and playing it. With this, I was not disappointed, and you won't be either. I do have some important suggestions though: It needs more levels, and character customization and multiplayer with chat would be awesome. Also, because I always die before the enemy I have to kill spawns, can you have the enemy appear at the start, or near the start? Coins and upgrades would be cool to. Great game, and other than what I suggested, don't change anything! This is a KILLER game, and you should download it!