GameDoes Once Upon use AI?
Most art and half the written text are AI-generated, and all in-game text is generated live by AI during play.
Our AI review, high confidence. Not a verdict; the evidence is below.
Checked against Steam on Oct 28, 2026.
- Developer
- Entropy Cat Studio
- Publisher
- Entropy Cat Studio
- Release
- 24 May, 2026
- Reviews
- 4 user reviews · 4
Before you buy: anti-cheat, accounts, DRM
No anti-cheat, third-party account or DRM is declared on Once Upon's Steam page.
Full anti-cheat, account and DRM details, with change history →
Production signals
Facts about who made the game and how players received it. They don't depend on AI, and they help tell a carefully made game that used some AI apart from mass-produced ones.
- Entropy Cat Studio released 1 game on Steam in the last 12 months. 1 of their 1 game disclose AI.
- This is the developer's first game on Steam.
- Few players: released 5 months ago with only 4 reviews.
- Our AI review of these signals: mixed signals.
What the developer says
All of the game code is via Vibe coding. Most of the art material is AI-generated. About half the pre-written text is AI-generated (Prompt for the story, character behavior, etc). All of the content of the text that the player sees in-game, during gameplay, is Live-AI-generated. The Cinematic trailer is Ai generated.
From the “AI Generated Content Disclosure” on the Steam store page, quoted as written. First seen by us on Oct 28, 2026.
What other sources say
| Source | Their take |
|---|---|
| Steam disclosure | AI content disclosed |
| AI judgment deepseek-flash | AI-driven · mixed signals, high confidenceReasoningThe disclosure states most art is AI-generated and all player-visible in-game text is generated live during play, making AI central to the experience. Code is also AI-assisted. Only one release in 12 months, so volume signals don't reach high effort risk despite few reviews. Against: Developer has only one release, so no pattern of mass-produced volume; some pre-written text and remaining art appear human-made. |
| Remove AI Slop open-source extension | Mostly AI-generated (generated live in-game, art, text, story/dialogue, marketing) |
FAQ
Does Once Upon use AI?
Yes. Once Upon's developer discloses AI-generated content on its Steam page. Most art and half the written text are AI-generated, and all in-game text is generated live by AI during play.
Is Once Upon AI-generated?
AI-generated content makes up a major part of the game, according to its disclosure.
How does GameAICheck know?
We read the AI Generated Content Disclosure from the game's public Steam store page, check it daily, and show what independent curators and open-source tools say about it. Disclosures are self-reported by developers.
Is something wrong?
Developers and players can dispute or report this page. We review every message and correct mistakes.