GameDoes Thirty Days with My First Love Sister use AI?
All in-game video, characters, scenes, cutscenes and music are AI-generated; dialogue, choices, stats, UI and programming are hand-made.
Our AI review, high confidence. Not a verdict; the evidence is below.
Checked against Steam on Oct 28, 2026.
Before you buy: anti-cheat, accounts, DRM
No anti-cheat, third-party account or DRM is declared on Thirty Days with My First Love Sister'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.
- lucky_tree_dev released 0 games on Steam in the last 12 months. 1 of their 4 games disclose AI.
- On Steam since 2023 with 4 games.
- Not released yet.
- Our AI review of these signals: mixed signals.
What the developer says
All in-game video footage (including characters, scenes, cutscenes，music) is generated using AI tools. Dialogue writing, choice design, stat system, UI design, programming are hand-crafted by the development team.
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 | Major AI · mixed signals, high confidenceReasoningThe disclosure states every in-game video asset, including characters, scenes, cutscenes and music, is AI-generated. Writing, choice design, stat system, UI and programming are declared hand-crafted, showing real development effort. The developer has released no games in the last 12 months, so volume-release risk is not indicated. Against: Hand-crafted dialogue, systems, UI and programming suggest substantial human effort; only 1 of the developer's 4 games discloses AI. |
| Remove AI Slop open-source extension | Mostly AI-generated (art, music/sound) |
FAQ
Does Thirty Days with My First Love Sister use AI?
Yes. Thirty Days with My First Love Sister's developer discloses AI-generated content on its Steam page. All in-game video, characters, scenes, cutscenes and music are AI-generated; dialogue, choices, stats, UI and programming are hand-made.
Is Thirty Days with My First Love Sister 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.