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0.03Sep 30, 2026 · seen Oct 5, 2026
Only the current version so far — new entries appear as the game ships updates.
Fish Sudoku: Brain Puzzle is a relaxing logic puzzle game where you discover the hidden positions of adorable fish and sea animals using deduction, observation, and smart moves.
Dive into colorful underwater puzzle boards filled with fish, starfish, turtles, octopuses, crabs, and other water animals. Each puzzle challenges you to find the correct animal positions without guessing.
Easy Rules, Deep Logic
The rules are simple to learn, but every level can challenge your brain:
• Place one fish or sea animal in each colored region.
• Place animals so they do not share the same row or column.
• Animals cannot touch, even diagonally.
• Use the X marks and available clues to eliminate incorrect positions.
• Complete the board through logic and deduction, not random guessing.
Fish Sudoku combines the satisfying deduction of logic puzzles, the pattern recognition of Sudoku, and the elimination gameplay found in Minesweeper-style brain games.
Find Different Sea Animals
The fun goes beyond fish. Discover a variety of underwater characters as you progress through the game, including:
Fish, Starfish, Tortoises, Octopuses, Crabs and other colorful sea creatures.
Each animal brings a fresh visual theme to the classic logic puzzle experience.
Collect and Upgrade Your Sea Animals
Discover different aquatic characters and make your underwater collection more rewarding as you progress. Unlock and upgrade your favorite fish and sea animals while continuing through increasingly challenging logic puzzles.
Relaxing Brain Training
Need a quick brain break? Fish Sudoku is designed for short puzzle sessions or longer solving streaks.
Improve your:
Logic • Deduction • Observation • Concentration • Pattern Recognition • Problem Solving
Take your time, study the colored regions, mark impossible cells, and find the perfect positions.
From Easy to Challenging
Start with simple boards and gradually take on more difficult logic puzzles. As the boards become more complex, you'll need to think several moves ahead and carefully combine row, column, region, and neighboring-cell clues.
Every completed puzzle gives you another satisfying brain challenge to solve.
Why Play Fish Sudoku?
Fish Sudoku: Brain Puzzle is made for players who enjoy:
• Fish puzzle games
• Sea animal games
• Sudoku-inspired puzzles
• Logic puzzles
• Brain games
• Relaxing puzzle games
• Minesweeper-style deduction
• Color grid puzzles
• Offline-style casual puzzle gameplay
• Easy-to-learn, hard-to-master challenges
No complicated calculations are required. Instead, use your logic to determine where each sea animal belongs.
A Fresh Take on Sudoku-Style Logic
Forget traditional number Sudoku for a moment. Here, colorful underwater regions replace numbers and adorable sea animals become your puzzle pieces.
Look at the board, identify impossible positions, place your animals carefully, and solve the entire grid.
Can you find every hidden fish?
Dive into Fish Sudoku: Brain Puzzle, test your logic, discover colorful sea animals, and solve your way through relaxing underwater brain puzzles.
Play Fish Sudoku today and start solving!