40+ candidates? Not a problem.
HB/HIB Games? Which?
Trine: the only from HB
Crayon: I cannot run it, just remember the name.
And yet it moves:
Tiny and Big:
Tremulous& Savage XR: Struggling Award!
Heroes of Newerth
Naev: Looks like many space game players like it.
OpenTTD& Simutrans: Rivals?
Battle for Wesnoth: no stable release yet.
Dungeon Crawl Stone Soup: how old is it?
OpenRA: great performance in compare to Zod Engine
King Arthur's Gold:
Freeciv: freeciv.net loss
Amnesia: The Dark Descent
Xonotic: Nexuiz has been away for 2 years.
Alien Arena&World of Padman: How about this 2?