You can hunt for prey and fight other worms in an eat-or-be-eaten world. The controls are innovative and might surprise you.
The project is a few years old and I'm working on the next alpha-release right now. I'll post some playable stuff soon. Here are a few videos of the work in progress:
After posting the last video, I got several comments asking why things just disappear when the worm bites them. Sure enough, it looked awful! I was so used to it that I didn't notice.
So I spent a couple days making the worms actually chew and swallow their food. Now you can take a chunk out of another worm as you jump and then finish chewing in mid-air like it's no big thing.