Goal

Sort all blocks so each tube holds exactly one colour. Empty tubes can be used as temporary buffers.

Moving Blocks

Tap a tube to select it (top block lifts). Tap another tube to move the block there. You can only move onto an empty tube or a tube where the top block is the same colour and there is space.

Undo

Tap Undo to reverse your last move. You can undo as many times as you like — it doesn't affect your level score.

Difficulty

Levels ramp up quickly — more colours appear and your spare buffer tubes shrink. From level 11 onward you only have one empty tube, so every move counts.

Scoring

Each completed level earns a flat bonus based on the level number (Level × 150 pts). The move counter is your personal performance metric — use it to challenge yourself to solve levels in fewer moves next time.