GameDoes Old Ninja : UnderWorld use AI?
AI was used for store page art, trailer and in-game music, the English logo, and translations; gameplay assets appear human-made.
Our AI review, medium confidence. Not a verdict; the evidence is below.
Checked against Steam on Oct 28, 2026.
- Developer
- Waterfall Studio
- Publisher
- Waterfall Studio
- Release
- 19 Sep, 2025
- Reviews
- 2 user reviews · 2
Before you buy: anti-cheat, accounts, DRM
No anti-cheat, third-party account or DRM is declared on Old Ninja : UnderWorld'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.
- Waterfall Studio released 2 games on Steam in the last 12 months. 4 of their 5 games disclose AI.
- On Steam since 2025 with 5 games.
- Few players: released 13 months ago with only 2 reviews.
- Our AI review of these signals: mixed signals.
What the developer says
Generating background images for the store page's cover, header, and banner Trailer and in-game BGM generation Creating the English version of the title logo Translation into other languages
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 | Minor AI · mixed signals, medium confidenceReasoningThe disclosure covers marketing art, BGM, logo, and translation, not core gameplay art or design. Two releases in 12 months is not high-volume, and the game has a small but real pixel-art Metroidvania scope. Low review count and 0% positive raise quality concerns but don't establish mass production. Against: In-game BGM is AI-generated, which players hear, and the game has only 2 reviews long after release with 0% positive. |
| Remove AI Slop open-source extension | Minor AI use (marketing, translation) |
FAQ
Does Old Ninja : UnderWorld use AI?
Yes. Old Ninja : UnderWorld's developer discloses AI-generated content on its Steam page. AI was used for store page art, trailer and in-game music, the English logo, and translations; gameplay assets appear human-made.
Is Old Ninja : UnderWorld AI-generated?
Only partly. AI is used in minor ways, such as store images, translation or small details.
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.