Games similar to Dark and Darker?

[Valenchimp]

Anybody knows about online co-op games with a similar gameplay or focus, not necesary a dungeon crawler but something with a similar feeling or something like that.

 

[Iguana-0]

Darkest. That's similar [I'm kidding]

 

[Sackboy]

not really that similar, but you might like a game called outward.