The first XNA Community Game demo’s are comming out already, not yet on Xbox Live, but there are already pc demo versions available for some games.
Biology Battle is a unique take on the classic space shooter genre. Take control of a medical nanobot during it’s mission inside of a target cell.
Avoid the cell’s defenses, and survive long enough to complete your mission. And then? Well, lets just say it gets a bit nastier.
And I have to say it’s addicting already, until the real version comes out on Xbox Live, you can check out the PC demo, you can even play it with an Xbox controller, but if you don’t have one, don’t panic, the keyboard+mouse controls are just fine.
You can find the demo fo Novaleaf Biology Battle here.