I've been reading some great things about Infested Planet, and from the looks of the trailer it's still shaping up to be a great and frantic mix of continuously adapting tactics and arcade top-down shooting madness. Rocket Bear's Alex Vostrov has also been documenting his progress on the community blogs for almost a year now, which most of us seemingly overlooked. Shame on us.
I suggest you give it a read, as it shows a fascinating journey from the early concept stages to where the game is at now. The game is 25% off for pre-orders through the game's website, and you can get an extra 10% off using the code STARBEAR.