In 7 days?
Y'know, something where the main character would be really weak, kinda like the tourist class from Nethack, and he'd regardless have to fight unspeakable horrors from other worlds. An old professor of some university, a journalist, a common civilian, totally not a soldier or anything. There'd be sucky weapons - knives, pistols, bare hands, running away - some ancient evil magic and other kinds of information, and a sanity value: Each time the main character would face some new terror or learn something from them books of magic and arcane, he'd lose a bit of his mind, and too much of the nasty stuff would mean that he'd go totally mad, collapse under the pressure, and commit a suicide. Something, like, a adventure/horror/RPG roguelike.
I'd play it.