Recently I heard from ARH Games about their new impending release of Multiplayer FPS game Acrogorpon. It's a pretty fast paced affair and looks like it includes a fair bit of rocket-jumping or similar. Actually rather than me talk about it, why not check out the videos showing the game in action:
They've even done a video of their christmas themed level:
I hate saying negative things about games (ahem) but the graphics do look a little dated. On the other hand it looks like it's a very small team of people working on this... But I'd be terribly hypocritical if I judged a game just on this. I've not played it yet so if anyone else has had a go please feel free to comment!
Their site where you can download and try the game is here