Frequently asked questions about 8Soluna
Quick answers to the most common questions about 8Soluna — what it is, how to play, what it costs, and how it relates to the Tango puzzle genre.
What is 8Soluna?
8Soluna is a free logic puzzle game in the style of Tango. You fill a grid with two symbols (☀️ Sun and 🌙 Moon) following balance and connector rules, until the puzzle is complete. Every puzzle has a unique solution and is solved by reasoning alone.
Is 8Soluna free?
Yes. The Daily Challenge is always free and you can play without an account. The first 60 Campaign stages are free, and you get 5 free Endless puzzles every day. A one-time unlock for unlimited play (R$ 9,90, no subscription) is coming soon.
How do you play Tango?
You fill the grid with two symbols following three rules: every row and column must have an equal number of each symbol; you can't have 3 identical symbols in a row; and the = (same) and × (different) connectors between cells must be respected. The goal is to complete the whole grid without breaking any rule.
What's the difference between the = and × connectors?
The = forces the two neighbouring cells to hold the same symbol, and the × forces them to differ. They appear between cells and help you deduce the rest of the grid.
What does the # connector mean?
The # combines two rules: the next cell is the opposite of the previous one, and the following cell repeats it (different, then equal). For example: ☀️ # 🌙 🌙.
Is 8Soluna the same as LinkedIn's Tango?
No. 8Soluna is an independent game, inspired by the same style of binary logic puzzle. It is not affiliated with, associated with, or endorsed by LinkedIn. What 8Soluna adds: a free game, an Endless mode, a campaign with progression, multiple visual themes, and extra mechanics.
Do I need an account to play?
No. You can play as a guest, including the Daily Challenge. An account lets you save your progress to the cloud, sync across devices, and (when available) unlock unlimited access.
Does 8Soluna have an app?
8Soluna runs straight in your browser, on phone or desktop, with no install. You can add it to your phone's home screen to open it like an app.
Is the Daily Challenge the same for everyone?
Yes. Everyone who plays on the same day gets exactly the same puzzle, so you can compare your time with others.
How much is unlimited access?
Unlimited access is a single one-time payment of R$ 9,90 — not a subscription. You pay once and unlock unlimited puzzles forever, plus extra themes. This unlock is coming soon and payment will be handled securely through Stripe.
Do the puzzles have a unique solution? Do I need to guess?
Every puzzle has one unique solution and can be solved with logic alone, no guessing. If you're stuck, there's a deduction you haven't spotted yet — use the hint, which explains which rule forces the next move.
What languages is 8Soluna available in?
Portuguese, English, Spanish, French, Italian and German. The language is detected automatically and can be switched at any time.
What happens if I make a mistake?
You can check where a rule was broken — for example, three identical symbols in a row or an unbalanced line — and fix it. A mistake doesn't end the game; it's part of the reasoning.