A post on One Of Swords has a new episode of One of Swords TV where "Activision community management team of one" Dan Amrich attempts to sort through the sticky issue of who owns the rights to No One Lives Forever, Monolith's spy spoof series, last known to be the property of Vivendi Games after they acquired with the Fox Interactive catalog. Since Vivendi eventually merged with Activision, he seems like the one to ask, and Dan explains that some of the IP they ended up with as a result of that merger has since been sold off, using the example of Leisure Suit Larry, and that many of the games they retained are now being sold on GOG.com, using the example of the King's Quest series. As for NOLF, he says this is something he's asked about himself, going on to explain:

The person that I normally talk to about this stuff does not believe that we currently the rights. They've never seen it, they've never been given the permission to put that stuff on Good Old Games. He said, basically, 'If we had it, I would love to be able to reissue those old games.' So, that leaves the question if Activision no longer has the rights to No One Lives Forever, who does? Monolith was the developer that handled those games, and they are now part of WB. So I thought, maybe at the time when Activision was saying 'we'll keep these, we'll leave these, we'll sell these, whatever,' maybe Monolith stepped up and took their IP back. So I contacted a friend at Monolith... and he doesn't know. Uh, so, unfortunately, all I can definitively say is that at this time I do not believe that Activision has the rights to No One Lives Forever.