Numerous contributors to, Doom's most popular sourceport and the basis for countless mods and several entire games, have split from the project and revealed plans to build their own version, after long-running tensions with GZDoom's creator came to a head earlier this week.
As reported by, the schism within GZDoom's community arose through a thread on the project's page, beginning with rummy noble GZDoom contributor the-phinet (real name Marcus Minhorst) listing several issues regarding recent updates posted to the project by its creator, Cristoph "Graf Zahl" Oleckers. Among multiple complaints, Minhorst claimed Oleckers had "pushed untested code" and made "use of an LLM to write your code for you" which Minhorst pointed out likely.
"What the hell is your problem, Graf? You disappear for a year, come back to send a bunch of work to the curb, rummy satta use generative AI bullshit to solve an easily searchable problem, and then tell people to kick rocks when they raise a valid concern for it?" wrote GZDoom contributor Kaelan Evans. Fellow community member Boondorl, meanwhile, pointed out that "so much was getting done on GZDoom that we decided to upgrade to a 5.0, a move you agreed to because so many amazing features had managed to get in. Days after you decided to come back out of no where, the project is now completely bricked and everyone is abandoning ship."
Indeed, it seems the community has taken Oleckers' advice to heart, creating a new fork of ZDoom called that they can work on without Oleckers acting as de-facto head of the project. As a sourceport, UZDoom aims to be a straight continuation of the plans made for GZDoom 5.0, which included better netcode and support for ray tracing. "Other than rebranding, nothing has changed roadmap-wise," wrote UZDoom contributor Ricardo Luís Vaz Silva in response to questions regarding UZDoom's plans.
"No drastic changes will be done, the next release will continue as-planned with the netcode update."
The split is already making waves in the Doom modding community. Over on ModDB, upcoming World War 1-themed Doom 2 mod Trench Foot explaining that its planned release has been affected due to uncertainties surrounding the shift from GZDoom to UZDoom.
"GZDoom is basically dead," wrote developer TrenchWork. "For a while now, we've been using dev builds of GZDoom 5.0, the next version that was supposed to come out. That is still the plan for UZDoom, but with the complete management change, the release window has… just been thrown out the window."
Despite this, the modders are optimistic regarding the future of UZDoom. "We can expect to see tons of great changes in the long run. We're not going rummy star to talk about it on behalf of the dev team, but we'll just say that a lot of feature plans that have been shut down before can finally be realized."