Terraria Otherworld

[Flarecobra]

http://www.terrariaotherworld.com/

Not too much has come out, but so far the synopsis is this:

"Terraria: Otherworld places the player in a life-and-death struggle to restore a once-pristine world – now overrun by a malevolent force that has corrupted nature itself – to its original splendor.

Combining elements of sandbox gameplay with role-playing and strategy elements, Terraria: Otherworld explores the Terraria experience in an innovative and unique way - providing a fresh approach to the “open world” genre."

And we also have a trailer.