The guys that brought you Plants vs. Zombies are coming down the market several notches and building a "sandbox" studio to foster niche mobile games called 4th & Battery.
PopCap explains:
4th & Battery is a new label we’re using to bring some of our more experimental ideas to customers. It’s a way to lift some of our internal filters and let us stretch our creative legs a little. Expect 4th & Battery games to be a little off the beaten path compared to what you might expect from PopCap.
Their first game Unpleasant Horse is coming soon. Until then, check out the teaser trailer and post your thoughts. Off the beaten path, indeed. I'm intrigued.