The perfect compliment for the fact that I'm having trouble with finding a digital purchase to Tribes: Vengeance.
Tribes: Ascend is the 5th game in the Tribes series. It seems to be focusing only on multi-player, but will probably have single-player training as well. Judging by the trailers, it will improve animations and graphics as well as the expected effects. The entire series has included jetpacks. And it's FREE! It has not come out yet, but I will attempt to upload development and videos to this thread.
UPDATE: Ascend will feature ragdoll physics judging by the trailer.