Test Tube Lab

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Test Tube Lab
Tap a tube to pick it up, tap another to pour. Sort every chemical so each tube holds just one colour. You can only pour onto a matching colour — plan ahead!

About Test Tube Lab

Test Tube Lab turns the classic colour-sorting puzzle into a calm chemistry experiment. The bench fills with test tubes of jumbled coloured chemicals, and your job is to pour them between tubes until each tube holds a single pure colour. You can only pour a chemical on top of the same colour (or into an empty tube), so every move is a small logic problem: which pour frees up space, and which one paints you into a corner? It is a true brain teaser — no timer, no reflexes, just planning. Hundreds of auto-generated levels ramp up gently, adding more colours and sealed locked tubes that open only after you finish enough experiments. Undo any move, spend a hint when you are stuck, and chase a three-star rating by sorting in as few moves as possible. There is even a fresh Daily Challenge and a shelf of achievements. Free, all ages, and playable on phones, tablets, and computers.

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