Yeah, looking forward to playing Overgrowth when it comes out. If you haven't played their first game Lugaru you should check it out. It's got a serious learning curve and the fights can get out of hand quick, but the challenge of beating each board makes it pretty satisfying when you do.
http://www.wolfire.com/lugaruLooks like it's 75% off ($2.50!) on steam till the Holiday sale ends.
http://store.steampowered.com/app/25010/(Also, FYI: Wolfire is the developer(s?) behind the Humble Indie Bundle.)