Space game is a graphical shooter game on the Wii U! Since it was originally designed to be executed via the .mp4 exploit in 5.5.x, there were several challenges that were imposed on its development in terms of efficiency and storage. There was one big issue though: I found that, whenever I compiled with -O1, very strangely, calling OSScreenFlipBuffersEx(0) in draw.c caused a crash. This didn't happen with OSScreenFlipBuffersEx(1)! I'm still not sure why this happens. I think, when compiled with -O1, the first screen buffer does not get properly initialized. Since this happens in loader.c, I moved the Makefile around to compile every file except loader.c with -O1. This way, it's all still linked together into one mostly compact binary and won't crash.