TOFTI Crystal Tubes

TOFTI Crystal Tubes is a calm sorting puzzle about organizing mixed gems in clear containers. A group from the top of one tube can move only to an empty tube or onto the same color. The goal is to leave four matching crystals in every filled tube. The rule is simple, but preserving a useful empty space and planning several transfers ahead becomes increasingly important.

Tap the source tube and then the destination. Legal transfers happen immediately, while an unsuitable target never removes a crystal. Undo restores the previous transfer and Reset returns the level to its opening arrangement. A visible move count encourages a cleaner solution without adding a timer.

Large gems and high-contrast colors are designed for small screens. The game has no time pressure, paid lives or forced advertisements, so players may think for as long as they like. Progress and best results remain local to the device.

How to play

Tap the tube holding the crystal you want to move, then tap its destination. A group can move only into an empty tube or onto a tube whose top crystal has the same color. Each tube holds four crystals. The level ends when every color has its own tube. Use Undo for the latest transfer or Reset to restore the complete opening arrangement.