Marble Mill

This is the free demo of Marble Mill: the copper era, about 25 to 30 minutes, one meltdown. It ends right where it gets good.

Wishlist the full game on Steam: https://store.steampowered.com/app/5077600/Marble_Mill/?utm_source=wavedash&utm_medium=page

I'm building an idle game that respects your time. Every coin you earn comes from a marble physically hitting a peg, no abstract number ticking up on its own. Buy an upgrade and the machine visibly rebuilds itself. Every hit is pitch-quantized to a pentatonic scale, so the mill literally plays music as it grows.

The full game ends. On purpose: about 3 hours to the finale (with credits), 100% of the achievements reachable on the way, and an endless sandbox after. No microtransactions, no wait timers, no dark patterns. $2.99 on Steam, Windows and Linux, Q4 2026.

Solo dev, made in Godot. It plays right here in the browser, with the mouse. Your progress is saved.

I read everything. If the first five minutes lost you, tell me where.

The demo sends anonymous play stats (no personal data, no player ID) so we can see how far people get. You can switch them off in Settings. Details: https://stoneforgelabs.games/privacy.html