
Originally Posted by
Zhick
It's actually quite simple: They licensed the DarkPlaces-Engine from LordHavoc and the Quake1-Engine (or was it 2?) from iD. LordHavoc required people who contributed code to the DarkPlaces-Engine to assign the copyright to him, so that deal is perfectly legal.
Illfonic also bought the rights to the trademark "Nexuiz" from Vermeulen, the original creator of Nexuiz, who afaik stopped contributing a few years ago. So it's kind of morally questionable for him to sell the trademark imho, but again perfectly legal.
Apart from the engine afaik the only parts used from the original Nexuiz will be a few maps, for which they supposedly also got a permission from the respective authors.
So there's really no GPL-violation or anything else illegal going on. Illfonic are not that stupid. :P But what Illfonic should've done is to involve/inform the community earlier, and not do it behind its back. Then there surely wouldn't have been such a huge back-leash at them.