Featured level
1 / 2
Endless Cycles I
A challenging level. It looks like there aren't many clues, but diagonal symmetry comes to the rescue, and the rainbow rune might save the lost.
ArcStar presents
RuneGrid
A calm puzzle of colour, logic, and hidden patterns.
Fill the grid so every row and column fits together. The rules are simple, but each level has a structure waiting to be noticed.
Support & feedback
Need help with RuneGrid?
If something is not working, a purchase needs checking, or you simply want to share feedback, you can contact ArcStar directly by email.
How RuneGrid works
Simple rules
Place runes so rows and columns complete cleanly. No timers unless you choose them.
Hidden structure
Some levels reveal symmetry, cycles, or tiny visual clues that make the board click.
Built to unfold
New ideas appear gradually, so the game teaches through play rather than explanation.
From the blog
RuneGrid articles
9 May 2026
The Unexpected Weight of a £0.99 Button
Reflections on preparing RuneGrid for its first App Store review and in-app purchase.
7 May 2026
Further Notes on RuneGrid's Procedural Soundscape
A deeper look at the procedural synthesis system behind RuneGrid’s evolving, unsettled musical atmosphere.
6 May 2026
The Sound of Hidden Structure
How RuneGrid uses small musical motifs and mathematical transformations to create a procedural soundtrack.
Opened a shared puzzle link?
Shared RuneGrid links are designed to open directly in the app. If you already have RuneGrid installed, try opening the link again from Safari. If not, download the game first and come back to the puzzle whenever you like.