Terraria. Steam shows me at 29 hours, although it's actually only about half that, as I tend to just pause it and do other things while it is minimized. I normally dislike this type of game, but I guess I just like zoning out for 15 minute chunks and fucking around. There is somewhat of an actual game here, best I can figure is that you're trying to build yourself up to kill the 3 bosses in the world, but there's no "end game" right now (dev says that's coming in a couple of content additions). There is a lot that irritates me about it, but things like crafting a golden sword tonight and whaling on zombies and demon eyes, jumping between three different worlds to gather potion supplies, or trying to figure out a way to route water so I can mine a gold vein without drowning, all keep me coming back. I think I am gonna try some multiplayer tomorrow night, then maybe take a break for a little while.