WaterLab

Water Lab is a browser puzzle game inspired by the classic water-jug problem. Start with the largest jar full, then pour between jars of different capacities to measure the exact target quantity.

Each pour continues until the source jar is empty or the destination is full. Finding the right sequence is the challenge!

Features

• 100 solvable puzzles with 3–5 jars.
• Animated pouring and clear water-level labels.
• Mouse and touch controls.
• Hints and step-by-step solution playback.
• Undo, restart, and an option to empty a jar.
• Progress saved in your browser.
• Optional sound.

How to play

Drag a jar onto another to pour, or select the source jar and then its destination. Reach the target quantity in any one jar to complete the level.

To discard water, select a jar and press Empty jar. Discard carefully—there is no refill tap, but you can undo or restart.

Play directly in your browser on desktop, tablet, or mobile. No installation required.