FireFall premiered at PAX this weekend and I think it looks pretty damn sweet.
Massive co-op game, free to play, cool looking world. I'm pretty excited for it.
It somehow reminds me of Half-Life 2. The ground-pounding machine and the alien-like creatures. The "thumper" did the exact opposite of what the corresponding machine in Half-Life 2 did, though.
Looks kind of neat. I like the rocks that look like brains.