My superdrive doesn't work - can i boot windows from a USB drive instead?

I decided I wanted to play a game on my mac. This can't be too difficult, right? It turns out they dropped support for mac at some point through development, so I have to go through windows.

First, I try burning a windows ISO onto my USB. This isn't as simple as pressing burn, i quickly realised I had to go through terminal and then wait an hour for it to do this. Once this was all done, i opened bootcamp and discovered that there was an option to install from a USB drive, but only if you have a macbook air or a mac mini, because in theory every other computer has a superdrive to work with. So it wouldn't let me partition my drive.

Next, I turned to something I discovered called WineBottler. After successfully managing to install my game using this, launching the game turned out to be less than successful. I was kept on a loading page for several hours before i realised that it had crashed long ago and wasn't doing anything. I force quit, and went on to my next plan.

I busted out Parallels 7, and installed Windows inside of it. I installed the game inside of windows, launched the game, and witnessed it run at a rate of 1 frame every 2 seconds.

I'm totally out of ideas. I've wasted my whole day on this, just trying to get my stupid mac to play a game. What are my options?