Color Sort

Each tube holds four units of color. Tap one tube to pick it up, tap another to pour. A level is done when every tube is either empty or full of a single color. That is the whole rule, and it is all the rule you need.

HOW IT PLAYS

You can pour when the receiving tube has room and the two top colors match, or when the receiving tube is empty. The entire run of matching color at the top flows across at once, as much of it as will fit.

Level 1 has three colors. Every four levels adds one, up to a ceiling of nine. You always get two empty tubes to work with — except on hard levels, one every five levels from level 11, where you get exactly one. That is where the real thinking starts.

THERE IS NO GAME OVER SCREEN

You cannot lose here, you can only get stuck. Stuck means step back. The first three undos in every level are free, because in this genre trying and backing out IS the game — nobody should be charged for their first wrong move.

EVERY LEVEL IS GUARANTEED SOLVABLE

Not a promise, a check. Every layout is run through a solver before it is ever handed to you; a layout with no solution never reaches a player. And levels are generated from the level number itself, so level 14 on your phone is level 14 on everyone else's — and "replay" gives you the same board back, so you can try a different move rather than a different puzzle.

The levels do not run out.

WHEN YOU ARE GENUINELY STUCK

- Hint (25 coins): shows the next move, and follows one whole solution rather than recomputing each time — tap it repeatedly and you reach the end instead of going in circles
- Extra tube (40 coins): once per level
- Undo: first three free, then 10 coins

Coins come from playing. New players start with 50. Finishing a level pays 8 coins plus 2 per color, so 14 to 26 depending on the level. Finish without a hint and without an extra tube and you get 6 more — the reward leans toward playing well, not toward buying help. Undos cost you none of that bonus.

DAILY MISSIONS

Three new tasks every day, paying 25, 50 and 100 coins. Finish six levels, pour ninety times, clear three levels with no help at all. Progress shows on a bar, and each task pays out on its own.

CLOSE THE APP MID-LEVEL AND COME BACK

The level in progress is saved, and the undo history is saved with it. A call comes in, or you hit Home by mistake halfway through untangling a hard board — reopen the app and the board is still there, with the way back still intact.

A LEADERBOARD, IF YOU WANT ONE

What gets ranked is the highest level you have reached, not a score. Sign in with an email or create an anonymous guest account; the board itself is readable by anyone, signed in or not. Playing without an account costs you nothing — your progress lives on your device either way.

TEN LANGUAGES

English, Tiếng Việt, Español, Português, Bahasa Indonesia, 简体中文, 日本語, 한국어, ไทย and العربية. On first launch the game follows your device language; you can change it in the Account panel.

NO ADS, NO IN-APP PURCHASES

Not one advert. No coin packs for sale, no paid version, nothing locked behind a payment. Coins are earned by playing, full stop.

Plays entirely offline. Dark interface, clear colors, tubes big enough to hit. Open it and play.