8Soluna — a free daily logic puzzle
8Soluna is a free logic puzzle game in the style of Tango: fill a grid with two symbols — ☀️ Sun and 🌙 Moon — so every row and column stays balanced and no rule is broken. Every puzzle has one unique solution and is solved by reasoning alone.
What is 8Soluna?
8Soluna is a free, browser-based logic puzzle in the style of Tango. You fill each cell with one of two symbols, following a few simple rules, until the whole grid is complete. There is nothing to install and no account is required to start.
Every puzzle is guaranteed to have a single solution that can be reached with logic, never luck or guessing.
How do you play 8Soluna?
Tap an empty cell to place a symbol and keep the grid balanced: each row and column needs the same number of ☀️ and 🌙, you can never have three identical symbols in a row, and the = and × connectors between cells must be respected.
New here? The full walkthrough is on the How to Play page.
Which game modes are there?
8Soluna has three ways to play, from a shared daily challenge to endless practice:
- Daily Challenge — one fresh puzzle per day, the same for everyone, always free.
- Campaign — 200 stages across 20 worlds that introduce each mechanic one at a time. The first 60 stages are free.
- Endless — unlimited puzzles at the difficulty you choose, with Classic, Against the Clock and Zen modes. Up to 5 free puzzles per day.
Why players love 8Soluna
- Free to play, right in your browser — no install, no account needed
- Every puzzle has a unique solution, solvable by logic alone
- A built-in hint explains which rule forces the next move
- Colorblind-friendly themes and a dark mode
- Available in 6 languages: English, Portuguese, Spanish, French, Italian and German