You can make any game you want instantly, but can never play it yourself. You cannot earn money or fame this way.

Other people can play it, but you can't. It's not guaranteed to be good, and where you don't know what you want, it's typically bad. It appears on the nearest computer with enough disk space, a physical copy is not created by the power. It's perfectly optimized but nobody can ever reverse-engineer your work. It never has any bugs, only unintended behaviors where you didn't know what you wanted.