Sudoku Dive: Pixel Ocean

Start in the shallows, travel through coral reefs and the deep sea, and solve Sudoku puzzles to unlock a living nature collection. Sudoku Dive brings logic puzzles, an original pixel world, and real marine-life facts together. Its ocean journey includes 100 approachable 5x5 puzzles, traveling from the shallows and coral reefs into the deep sea. Every level features a real marine species: • 100 different marine species • Switch between original pixel art and real photos • Common names, scientific names, and short facts • See your time and newly collected species after each level • Original pixel backgrounds and music for different ocean zones Focused on the puzzle: • 100 fixed offline puzzles, each checked for a unique solution • Friendly 5x5 rules for beginners • Optional mistake checking, hints, restart, and saved progress • Designed for iPhone and iPad in portrait and landscape • Chinese and English based on the system language • No ads, no accounts, no third-party analytics, and no connection required Support Developer items are optional consumable tips for parents. They do not unlock content or change hints or the puzzle-solving experience. Purchases and external source links are protected by a parental check. 5x5 rules: Fill every row and column with the numbers 1–5 exactly once. Take your time and build your collection. Complete the ocean journey and a hidden surprise may appear.