Hammerfight and these games you've mentioned are from the same publisher (KranX Productions), but not from the same guy. FYI, Hammerfight was made by Konstantin Koshutin aka GKosh.

But maybe we could approach KranX about releasing Hammerfight here as well: http://kranx.com/

Yeah, that's how I understood it. I just mean that the fact that someone clones a game doesn't necessariy make the original special :D But I'm not going to argue with you, Hammerfight is indeed a fascinating and brilliant game. Not many indie games manage to blow me away but Hammerfight did with its unique concept and brilliant gameplay. It's certainly not suitable for the mainstream, though. I can imagine that few players are persistent enough to get past the insanely challenging and frustrating first steps.

Guys, you may also want to check out this video review of the game: http://www.youtube.com/watch?v=6M_9CTyMHbc