What is a good steam game to easily get sucked into for hundreds of hours?

I don't see Rust on there!

Rust is a survival game where the goal is literally to just survive. It is like minecraft without the mining part.

Also, you may like Dota 2, its the action strategy game that is absolutely fantastic.

Rust. I got so addicted, that I played about 450 hours in a matter of 4-5 weeks. That was the Alpha beta too.

They've moved into a new build with a new engine/visuals. I think I'll get stuck into it again in my next break.

Hmm… I'm not too familiar with all of the Steam games. It all depends what genres if games you are into. I see you have Skyrim on the list. I for one, too, got sucked into Skyrim, and if you have gotten bored of it, I suggest the DLCS if you don't already have them, because they can make it like a completely new game. So, just a suggestion if you don't already have them.

Deus Ex Human Revolution is good. Metro Last Light. Bioshock Infinite. Borderlands 2 can be a big time crunch.

Oblivion fallout 3 fallout new vegas the sims 3 and morrowind can easily cost you whole chunks of your live