Aquarium
Pour water into each tank so every row and column count fits.
How to play Aquarium
The grid is divided into bold outlined tanks — the aquariums. Every cell is either water or air, and inside each tank the water behaves like real water: it lies flat, so a whole row-segment of a tank fills together, and it sinks, so anything below a filled cell in that same tank is filled too. In short, each aquarium fills from the bottom up to one level line. The numbers along the top count the water cells in each column, and the numbers down the left count them in each row. Click a cell to set that tank's water line at that row — filling that row and everything beneath it in the tank — and click a water cell to lower the line. Match every clue to solve it, and race your best time.
Aquarium leaderboard
Top scores — log in to compete.
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Aquarium — frequently asked questions
How does the water fill an aquarium?
Water always settles to a flat level and fills from the bottom up. Within a single tank, if one cell in a row holds water then the whole row-segment of that tank does, and every cell of the tank below it is filled as well.
What do the numbers around the grid mean?
Each number on the top is the total count of water cells in that column, and each number on the left is the count for that row. Fill the tanks so every one of those counts is met exactly.
How do I lower the water in a tank?
Click a cell that already holds water and the tank's level drops to just below it, emptying that cell while keeping the water beneath. Clicking an empty cell raises the level up to that row instead.
Is Aquarium free to play?
Yes. Aquarium runs free in your browser with no download and no sign-up, in clean black and white, with fresh solver-verified boards every game.
Is Aquarium free to play?
Yes — Aquarium is completely free on Inkplay, with no download, no sign-up, and no in-game purchases. Open the page and play instantly on desktop or mobile.
Can I play Aquarium unblocked?
Yes. Aquarium runs entirely in your browser with no download, install, or plugins, so it loads instantly and keeps working even on school or work networks where bigger game sites get blocked.
More black & white games
In the mood for more? Try 2048, Memory Match, Lights Out, 15 Puzzle — or browse all puzzle games and the full games list on Inkplay.