I'm not familiar with any of those games, but I can tell you there aren't
many free/libre software third-person 3-D games. The only one I know of is
Blob Wars: Blob And Conquer (it's found in the Trisquel repo), and I don't
know how good it is since I've never played it:
http://sourceforge.net/projects/blobandconquer/
You might want to try The Ur-Quan Masters, though. It's different, but if
what you like is adventure games with action and a good storyline, you might
like it. It's one of my favorite games, personally.
Also, if you like adventure, you might want to consider the point-and-click
adventure games ScummVM supports. You might start with Beneath a Steel Sky or
Flight of the Amazon Queen (which are available in the repo), though
personally I like the King's Quest series better. These don't have action, so
I'm sure they're quite different from what you're used to; but still, you
might like them.
