I decided randomly that if, for whatever reason, you guys want to play the original demo of this game, there is now a launch option for that. Put "Demo" into the launch options, and you should be golden! The original demo runs MUCH better because it renders less of the screen and is only 1 (albeit humongous) level. The movement is also much less controllable, meaning it's harder to do precise jumps. No sprint, either. And the first and only level is levels 2 and 4 combined. There's a lot more, too! So go check it out, I guess.