Find the sharks. Follow the clues. Make a little splash.
Make brain puzzles your daily dive. Inspired by the reasoning of Sudoku and Minesweeper, Sharkdoku brings you endless colorful logic puzzles, friendly sharks, and unlimited free restarts.
THREE SIMPLE RULES
• One shark in each color region.
• One shark in every row and column.
• Sharks cannot touch, even diagonally.
Tap to rule out a square. Double-tap the same square to place a shark. Every discovery brings your new friend to life and sends sparkling pearls swimming toward your score.
LEARN AS YOU PLAY
The guided first level shows you how to find a shark, clear its row and column, and check its neighbors. Visual rule cards keep the essentials close.
ENDLESS LEVELS
Explore generated puzzles with one solution each. Board sizes vary as you progress, growing from a four-shark tutorial to challenges with up to ten sharks. Fresh layouts keep coming without waiting for new level packs.
A LITTLE HELP
Hints highlight your next safe move. Reveals uncover a shark. Start with five of each. When you run out, an optional reward video adds one more hint or reveal. Seven-day streak chests also award free supplies. Each attempt gives you three squid lives. Run out? Restart immediately for free, as often as you like, or watch an optional reward video to restore three squid lives and keep your board. There is no energy timer or wait for lives to refill.
YOUR DAILY PUZZLE HABIT
Complete a new level each day to collect a fin. Seven consecutive days unlock a mystery chest of free hints or reveals, then a new streak begins. Optional local reminders can give you a nudge to dive back in.
YOUR PACE, YOUR OCEAN
Play puzzles offline with no timer. Ads require an internet connection and availability; banners and occasional ads between levels appear later in your progression. Your level, board, pearls, supplies, and streak are saved on your device so you can continue where you left off.
Ready to find your first shark?
Find sharks in endless brain puzzles. Daily play. Unlimited restarts.