I know one page that could work for nsfw games, but since it also hosts pirated content I won't drop names (I know few devs drop demos and free version of their games there instead)
Lol, I'm probably thinking of the same one, and that's an interesting idea. Actually I think some devs have already been exploiting it for network effect for a while now come to think of it. But man, rough crowd there. They kinda resent anyone for charging for anything ever (which makes sense, it's a piracy forum after all).