🌊 Free Web Arcade

Aquaria — Zen Water Logic Puzzle

Fill glass tanks, harness natural gravity, and balance aquatic quotas! An elegant fluid deduction challenge featuring campaigns, daily tides, and peaceful marine sanctuaries.

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How to Play Aquaria: Rules & Mechanics

Aquaria is an atmospheric, tactile fluid deduction game built on the classic principles of Aquarium logic puzzles. Your challenge is to fill individual glass containers with water until every row and column satisfies its exact quota — all while obeying the inexorable pull of gravity.

Core Mechanics of Fluid Logic

The puzzle board is partitioned into irregular glass tanks, each delineated by solid borders. Rather than coloring cells at random, every decision you make is governed by two fundamental laws of physics:

⚖️ 1. Downward Gravity

Water naturally settles at the bottom of each glass chamber. A tank cannot hold suspended water while leaving empty air below it. Filling a higher level instantly fills all cells underneath it in that tank.

🌊 2. Level Surface Equilibrium

Water maintains a completely flat, horizontal surface across the entire breadth of each tank. If one cell at a given elevation contains water, every other cell in that tank on that same row must also be filled.

🎯 3. Row & Column Quotas

Numbered indicators along the top and left of the grid designate the precise count of water cells required in each column and row. When you hit a line's quota, its counter automatically dims.

✕ 4. Air Markers & Elimination

Switch to Air mode (✕) to mark cells that can never hold water. If a cell cannot contain water, no cells above it in the same tank can ever hold water either!

Deduction Tips & Pro Strategies

Every board in Aquaria is strictly deterministic and solvable purely through logic — no guesswork is ever needed. Here are the most effective deductive techniques:

Frequently Asked Questions

What type of puzzle game is Aquaria? +
Aquaria is a fluid deduction logic game inspired by the Japanese grid puzzle format known as Aquarium. It combines spatial reasoning with physical hydrostatic constraints like gravity and horizontal fluid leveling.
Can water float with air underneath it in a tank? +
No. Water in Aquaria strictly obeys gravity. It must always rest at the base of the tank or upon another layer of water. You can never have a filled cell directly above an empty cell within the same glass tank.
Do all puzzles have a unique solution? +
Yes. Every campaign expedition level and Daily Tide puzzle is procedurally generated with an integrated solver that proves unique solvability without requiring arbitrary guessing.
What is the Daily Tide mode? +
Daily Tide provides a synchronized universal daily puzzle shared by all players across the world every 24 hours. You can compare your solve times and maintain daily solve streaks.
Is Aquaria completely free to play? +
Yes! Aquaria is 100% free with no downloads, accounts, or in-app purchases required. Simply load the page and begin solving directly in your browser.