I just started a new Terarria world today and played an hour on it because of the new 1.3 update. I'm was never hugely into Terarria but I still found it a pretty fun game. I've also played approximately 16 hours of Creeper World 3: Arc Eternal over the past few weeks. I immensely enjoyed the first and second games in the form of Flash games, and I picked the third one up over the Steam Summer Sale. Pretty addicting, I must admit! I've also played about 11 hours of Space Engineers, all of which was during last weekend. I managed to build two ships: a tiny, super-basic ship for extended mining operations and a mining ship with actual drills. I've been meaning to work on a new ship but Creeper World is so much fun and it's less of a commitment to play it. I purchased a bunch of games over the SSS, and I made it my goal to play every. single. one. No exceptions. So far I'm off to a terrible start because some games just suck you in.