One way you could do it is make 2 .exe's for your program one that is your program and one that is for the game then have the program copy the game.exe and have it run the users scripts and such, of course there would be more to this that you would have to figure out but this would be the essential idea. But i don't think that is legal in GS terms not sure you would have to look it up. But there is probably another way.