An idle game where every coin is a real collision. Build a marble mill, watch it grow into a roaring machine — and finish it in one satisfying evening. 100% achievements in ~3 hours, endless sandbox after. An idle game that ends.
The in-game strings and achievement and perk descriptions were written with generative AI assistance.
MarketingAssist
The store page text was written with generative AI assistance.
Not used, per the developer
In-game AIArtMusic & SFX
Not mentioned
CodeVoiceTranslation
Read the full disclosureQuoted from the Steam store page
Marble Mill's text was written with generative AI assistance — the in-game strings, the achievement and perk descriptions, and this store page.
Nothing else is AI-generated. The mill is drawn by the game's own renderer rather than from image files: the build contains no art assets beyond the window icon, which a script in the project generates. Every chime is synthesised in code as it plays, so the game ships no audio files at all. And nothing is generated while you play — there is no AI model in the game and no calls out to one.
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Followers
Growth
Steam followers
2 now · Daily snapshot of public Steam data
Collecting dataGameDB started tracking this game on Sep 23, 2026. The chart fills in as daily snapshots arrive; the latest reading is 2.
Why it’s here: 2 Steam followers. Upcoming games rank by Steam follower growth over the last day and week, weighed against the audience they already have. Released and upcoming games are charted separately; estimates and stars are never mixed in.
Made by
Developer
SL
StoneForge Labs
Developer on Steam
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Marble Mill
