I rewatched the movies recently before watching the new one and now I've found out there's a comic... Well, it's just a short John Kramer's origin, but it seems to be a bit different. The movies retconned the origin quite a lot of times already, maybe this one is the original one, but anyway, I can't say it was cool or anything... Mostly boring and the art is really dirty. You'd expect to see at least some R-rated content in a Saw comic, but no, that's not the case here. Anyway, not the worst possible movie tie-in comic.