Saber Bets Its Games Will Outrun the Writer Fight

Saber Interactive chief creative officer Tim Willits said at Gamescom that a public fight over AI and a former writer will not change how the studio talks. He compared the anger to the Epic Games Store launch of World War Z and told people to wait for Rideshare “Stimulator.”

Asked if the backlash had forced any rethink, he said no. That answer is the bet. Saber is treating a named writer, a missing store label, and a CEO insult as the same kind of noise it rode out in 2019.

Willits Is Betting the Games Will Clear the Air

Willits has been in games long enough to watch store fights, review bombs, and platform wars come and go. At Gamescom he put this one in that pile. “Sometimes we ‘say what we mean’ too much,” he said, with a laugh, about the way Saber’s bosses talk in public.

I’ve been in the industry for so long, and there’s always some dust up. People got mad at Saber because we put World War Z on Epic, and people were like, ‘oh, Saber’s destroying the industry.’ Now 30 million people have played World War Z. And the games will speak for themselves, even in our experiment with Rideshare [Stimulator].

Tim Willits, chief creative officer, at Gamescom

He wants players to boot the taxi game when it ships and sort it out themselves. “They may be like, ‘Oh, this is cool! I like this,’ you know. And if they don’t like it, fine,” he said. “You make a good game, they’ll find it and play it.”

That is a clean wager if the fight is about a store. It is a messier one if the fight is about a person the CEO discussed by name, then said he would have been happy to swap for a chatbot.

30 Million Players Did Not Settle a Writer Fight

World War Z did become the example Willits wants it to be. Saber launched the co-op shooter on April 16, 2019, with PC timed to Epic. Fans who wanted it on Steam called that a betrayal. Chief executive Matthew Karch argued Epic’s cut and storefront push were worth the heat. By June 2019 he said the game had sold more than 2 million copies worldwide, including 700,000 on Epic, which he called the biggest digital platform for the title.

On Dec. 18, 2025, in a campaign DLC announcement with Paramount and AMC, Saber said World War Z crossed 30 million players across platforms. That is the number Willits now loads into every shrug. More than six years after launch, the player count is real. The analogy still asks two fights to be one.

An Epic exclusive is a shelf argument. Players who hated the store could wait, pirate, or buy on console. They did not have to watch the boss describe a former lead writer as someone he had never met, then as someone he would rather have replaced with software “programmed to be honest.”

THE BET IN NUMBERS

• Player count: Saber puts World War Z at 30 million players as of Dec. 18, 2025.
• Early Epic haul: Karch said 700,000 Epic copies sat inside more than 2 million sold by June 2019.
• Buyback price: Karch’s Beacon Interactive took Saber in a divestment priced at $247 million on March 14, 2024, after Embracer had bought the group in 2020 for $525 million.
• Writer claim: Saber says its writing staff has tripled since 2023 and that 3,000+ employees need not fear an AI swap.

The $247 million figure includes $44 million of assumed earnout debt and $203 million in promissory notes. Karch is not a hired messenger. He owns the company that owns Saber. When he talks about a writer, he is talking as the buyer, the boss, and the brand.

What Stella Sacco Said Happened in 2023

Stella Sacco, a writer with 20 years in games, listed herself as Saber’s lead writer from July 2023 to July 2024, a 12-month stint. Rideshare “Stimulator” went up for Steam wishlists on July 30, 2026, as a UNIGINE-developed, Saber-published driving sim about running a taxi business and talking to odd passengers. She said she found the trailer the same way everyone else did.

On Aug. 11 she wrote on Bluesky that she had been lead writer on the game and that “Saber replaced me with ChatGPT midway through development.” She added that passenger voices were AI too, and that the Steam page either hid a change of plan or hid the tech. She posted a December 2023 Facebook note that already said she had been replaced on a work game with ChatGPT.

Her account of the internal fight is specific. She said her boss argued to keep her, that she was funny and had done live games, and that a Saber executive pushed AI anyway because “gamers love new tech” and it would be “great marketing.” She said she warned Karch in December 2023 that players would hate this more, not less, by the time the game shipped. She also drew a line around UNIGINE, saying the problem sat with one or two Saber executives and that she had no beef with that team.

Saber answered on Aug. 12. “Neither Saber nor Unigine have replaced any writers with AI for Rideshare or any other game,” the company said. “In fact, Saber’s staff of writers has tripled since 2023. Rideshare’s story was written entirely by real people.” In the same breath it confirmed an experimental free-ride mode that “by necessity incorporates AI as the number of passengers in the game is infinite,” and said none of its 3,000+ staff had to worry about being replaced by AI.

Sacco’s reply cut at the join. “You can’t meaningfully say both ‘writers wrote the story’ and ‘computers wrote the text,’” she said. “If rides I wrote are in there, and also rides AI wrote or will write are in there, then AI was still used, and I was still replaced, just as Saber told me they were doing in December 2023.” She later said they took her off the project so ChatGPT could write the rest of the text, including planned live updates.

Karch then made himself the story. “Stella who? I had to ask Claude because I have never spoken to her or seen her,” he said. He added that she was “replaced by someone more talented and terminated for a variety of reasons a few months later,” that she enjoyed controversy, and that “in retrospect [he] would have been happy to replace her with AI.” He also said the full story script, if it ever won an award, would go to “someone who can walk up on stage and receive it,” and that she had broken a confidentiality clause by speaking before Saber was ready to disclose the AI work.

A CEO who opens with “Stella who?” and then recites her termination has already answered his own question. The infinite-passenger mode is a product idea that can be argued in public. It never got that hearing once the comments turned into a character attack. Repliers on X made the same point in blunter words: he claimed not to know her, then proved that he did.

FROM WISHLIST TO GAMESCOM

1. July 30, 2026: Rideshare “Stimulator” goes live for Steam wishlists with no AI box on the store page.
2. August 11, 2026: Sacco posts that she was lead writer and that Saber replaced her with ChatGPT midway through development.
3. August 12, 2026: Saber denies any writer-for-AI swap, says the writing staff has tripled since 2023, and confirms an experimental free-ride mode that uses AI because passenger count is infinite.
4. August 13, 2026: Karch says “Stella who?”, calls her less talented than her replacement, and says he would have been happy to replace her with AI.
5. August 14, 2026: The Steam page gains an AI disclosure covering voices, localisation, optional Free Ride missions, and some radio music.
6. Mid-August 2026: Sacco says Karch sent a long email and “apologized unreservedly for the awful way he spoke about me in the press.” She accepts it and keeps the full text private.
7. August 28, 2026: Willits says Saber will never fire someone and replace them with AI, and that Hellraiser, Turok, Stuntman, and Space Marine games do not use AI.
8. September 5, 2026: Willits’s Gamescom comments land: no change to comms, the Epic comparison, play the game when it comes out.

On LinkedIn, Karch wrote that he “got triggered” and “shot first and thought second.” He called himself a human being who had done what he could to rectify. He also wrote that he had had an “insightful week” and that “the digital ecosystem thrives on outrage and surface-level takes.” Sacco said he regretted how people online were speaking about her. “I’m not worried about being called slurs by random commenters. I’m a trans woman, that’s every day for me, but it stunk to have my skill and reputation built of 20 years in games publicly maligned by someone with institutional power,” she wrote.

What Rideshare Stimulator Discloses About AI on Steam

Valve told partners in January 2024, in a post on how Steam handles AI-made content, that store pages would carry much of a game’s AI disclosure so customers could see it. Developers have to describe pre-generated assets that ship with a game and live-generated output while it runs, plus the guardrails on that live output. In January 2026 Valve narrowed the form so ordinary coding helpers used for speed do not need a label. Player-facing art, sound, narrative, and localisation still do.

Rideshare “Stimulator” sat on Steam from July 30 without that box, even after Saber had already described an experimental AI mode to the press. Karch said the page would be updated once the feature set was final. The box arrived on Aug. 14, after a week of argument, not after a quiet lock on features.

THREE AI USES NOW ON THE STORE PAGE

• Main campaign: Story, characters, and dialogue are written by human writers; AI tools handle voice generation and some localisation.
• Free Ride: Optional mode with AI-generated passenger missions and localised dialogue, separate from the campaign and skippable for players who want only human-written narrative.
• Radio: A mix of human-made and AI-generated music, with AI stations labelled in-game.

That wording now sits in the AI generated content disclosure on Steam, under About This Game, on a page that still lists the title as coming soon. UNIGINE is the developer. Saber is the publisher. Ford’s marks appear with permission. Minimum spec calls for 16 GB of RAM and 50 GB of space. None of that tells you who wrote which passenger, which is the part Sacco and Saber still do not agree on.

Karch has said the experimental mode is “not the core experience,” and that wiring it up meant adding two writers and multiple coders to wrangle AI tools. He said the net cost was higher than leaving the features out. Willits later said Free Ride exists so the game can chase current events “so fast,” with weekly or biweekly AI-written updates. That is a live-ops pitch. It is also exactly the kind of player-facing generation the generative AI section of the content survey is built to flag.

The Studio Already Promised It Would Not Replace Anyone

On Aug. 28, after the apology and after the Steam box went up, Willits made a labor promise that sits poorly beside Karch’s August quotes. “We will never fire someone and replace them with AI,” he said. Pressed on the claim that Saber had done that already, he went further: “I promise you we have never let anyone go and replaced them with AI. We hire people all the time.”

He also said Saber wants to “figure this new technology out” at small scale, and that “somebody [at] some game company will come up with such a brilliant idea” that the rest of the industry will copy it. The experiment, in his telling, is Rideshare “Stimulator,” not the licensed shooters and horror games on the same slate.

Then came Sept. 5. Same executive, same studio, same month of Gamescom tape, and a flat “no” when asked if the fight had changed how Saber talks. The apology was private. The Steam label was a store rule. The comms culture is the thing Willits is protecting. “Say what we mean” is the house style. Karch said what he meant about Sacco, then spent a week walking it back. Willits is declining to treat that week as a lesson.

Saber can hold both lines only if you separate jobs from jokes. The company says no writer was swapped for a model, that headcount is up, and that the main campaign is human. Karch still said, on the record, that he would have been happy to make that swap, and that honesty was the quality he associated with the machine. Willits is now asking the audience to file that under dust.

Hellraiser, Turok, and Space Marine Stay Off the Experiment

Willits has been careful to wall off the money games. He said there is no generative AI in Saber’s big titles: no Hellraiser, no Turok, none in Stuntman, and none in the Space Marine games. Those names are the reason he also said, in a separate Gamescom conversation, that Saber’s confidence is high enough to land almost any IP. The taxi sim is the lab. The licensed work is supposed to stay clean.

WHERE WILLITS DRAWS THE LINE

That split is how Saber wants licensors and players to read the month. The ugly quotes belong to a lower-priced experiment. The horror and shooter brands stay human. It is also how a comms bet can fail even if the lab game plays fine. Clive Barker, Turok’s owners, and Games Workshop do not have to ship a chatbot passenger to inherit a week in which Saber’s CEO talked about replacing a writer with one.

Willits is right that players are not a hive. Plenty of people will never read Karch’s interview and will only see a taxi game with a skippable AI mode. Plenty of others will never boot a Saber title that wears this month as a first impression. He is asking the first group to outnumber the second, the way Epic buyers eventually outnumbered Epic boycotts on World War Z.

Rideshare Stimulator Still Has to Be Played

The game is still listed as coming soon. There are no user reviews. The disclosure is up. The private apology is accepted. The public quotes are still searchable. Saber has not revised the way it talks, and Willits has said it will not.

He closed the Gamescom chat the way a producer closes a focus test. Check it out when it comes out. Play it. If you like it, good. If you do not, fine. The studio will keep making the games it can land, put them in front of people, and let players decide, “because players are smart.”

World War Z’s 30 million players are the precedent he wants on the table. Rideshare “Stimulator” is the next chip. The writer who says she was taken off the text in 2023 is not a storefront, and she does not get patched by a wishlist button.