Love some Quake? You're not going to want to miss this one. Call of the Void is an impressive new crossover mod release for Quake 2. Designed to be fully compatible with Quake 2 Remastered it brings together the worlds of Quake 1 and Quake 2.
More about it: "Call of the Void" picks up where "Call of the Machine" leaves off. With our protagonist trapped in the void, they suddenly hear a voice in their mind. The entity speaking identifies itself as one of the ancient gods, Vadrigar, who proposes to the protagonist that they escape the void by sending them on a new mission for revenge against the Stroggs. This is in response to the Stroggs transforming the fallen Vadrigars (Chton and Shub-Niggurath) and their followers into partially mechanical creatures in the service of the Strogg leader Makron. Our protagonist will travel to a new, unknown dimension where levels from both Quake 1 and Quake 2 converge, and they will confront enemies from both franchises.
Features:
- 18 new monstrous Strogg hybrid creations plus 2 new final bosses plus 11 Hybrids Prototypes.
- Quake 1 Original monster roast ported to Quake 2 Remastered
- A new campaign with 5 huge new maps mixing new and old scenarios from both franchises.
- Made to be fully compatible with Quake 2 Remastered.
- A new story that takes as its starting point the ending of the new official expansion "Call of the Machine."
- Old monsters from Quake 1 adapted to the new Quake 2 Remastered.
- Source code and FGD file available for the community to expand content.
Check out the release trailer:

Direct Link
You can download it from Mod DB and GOG.
If you want to run it on Linux with Quake 2 Remastered using Proton from Steam, it's quite simple. Just extract the mod folder contents from the zip file into the "rerelease" folder inside where you installed Quake 2. So the "q1q2" folder sits next to "baseq2". Then add this launch option to Quake 2 inside Steam:
+set game q1q2
You'll then be able to select Call of the Void in the New Game menu.