Metro 2033 was one of those games. It didn't necessarily review well, but garnered quite the cult following amongst the PC gaming master race. THQ are slowly leaking info and footage of the game's sequel, but you'll have to 'like' the game on Facebook to check it out.
Early this morning, Australian time, there will be a proper gameplay video released, which we'll show right here, but for now, this is all we've got! I know there are a few among you who aren't fans of the whole Facebook 'like' thing, but I feel like it'll be a small sacrifice for fans of the series.
But just so you know what you're signing up for - there are some preview vids and screenshots available on the Facebook page, and I think it's worth checking out.