Rainbow Tube Sort

Rainbow Tube Sort is a classic relaxing color sorting puzzle game with glossy vibrant balls!
Your mission is simple yet addictive: tap any glass tube to pick up the top colored ball, then tap another empty or partially matched tube to pour the ball inside. You can only stack balls of the same hue on top of each other.
Plan your pouring steps carefully! Every level is cleared when each glass vial contains only one single color of balls, with no mixed shades left behind. As you advance, stages add more tubes and extra ball colors to ramp up the logic challenge.
Core Game Features
🔴 Bright glossy red, blue, yellow rainbow glass balls & transparent test tubes
🧩 Hundreds of progressively tricky sorting levels for endless puzzle fun
🛠 Handy helper tools: undo last move, hint guide, add extra empty tube
🪙 Earn gold coins after clearing levels to unlock more power-ups
🎨 Stylish dark doodle background that makes colorful balls pop visually
👆 Simple tap-only controls, no complicated drag operations
📶 Fully offline playable, solve sorting puzzles anywhere without Wi-Fi
🧠 Calming brain training game to boost your logical thinking & planning
Test your sorting logic! Can you separate every rainbow ball and finish all tubes perfectly? Download Rainbow Tube Sort and enjoy stress-free color puzzle relaxation!

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