On an integrated Intel graphics card, it can't run even if I install a 4-Hammer... I'd say it's a bit heavy for what it's supposed to do. Start simple: it needs to run at 60 fps on any machine. From there, you can slow it down if you want. Otherwise, you have no room for improvement. Graphics aren't what make a game fun. An indie must at least run on any machine. The idea seems good.