Nice work; Very original
The game is rather good, and I had much fun playing it. It's a new concept, having a game that's totally about upgrades, where you even have to buy your own upgrade shop. The mystery selection really got me. The only real problem I had, was that some of the upgrades were actually better than the final upgrade in that selection. Such as one of the menu background upgrades, and the Menu Button ones, too. Other than that, great game, I want to see more good games like this on Newgrounds.