Wolfire Game's ambitious title, Overgrowth, has been in the works for a couple of years (you read that right) already. But the 3D beatem' up title is still under development. However, people who have followed the sequel to Lugaru: The Rabbit's Foot (yes, this story is about a rabbit, who is out to seek revenge for the murder of his family) for that long (like myself) can now purchase it off Steam for PC, Mac or Linux for $25. The 17% discount is valid only until January 2nd, after which Overgrowth will be available for its original price of $30.
While no release date has been mentioned (let's hope for sometime in 2014), people who purchase the game off Steam Early Access get to toy around with the game's modding tools, as well as free-roam the sandbox style title.