WoW Classic's Deathknell rebuilt in Quake from your own copies. Shotgun its zombies, skeletons and Scarlet zealots to the gate.
Proof of concept. This is an early, experimental build and there are some bugs in it: expect rough edges such as undead getting stuck on invisible collision, dark spots in the lighting, and a long first load.
You rise by the crypt in Deathknell, the Undead starting zone of World of Warcraft: Classic Era, but you're Quake's Ranger, and you brought a shotgun.
What's in it
Needs Quake (Steam, rerelease or original) and World of Warcraft with Classic Era installed. Nothing from either game is shipped: everything is read from your installs. The first Play builds the map, which takes a few minutes.
Solo. Runs on the FTE Quake engine, which comes with the mashup. The mashup's own code is GPL-2.0 (built on id Software's GPL Quake QuakeC).