PenguDoku is a classic Sudoku puzzle game with five difficulty levels, smart hints, notes mode, daily challenges, and elegant themes. Free to play and supported by ads — no in-app purchases, no paywalls.
Everything you need for the perfect Sudoku break
From Easy to Master — a gentle warm-up or a serious brain workout, your choice.
Stuck on a grid? Smart hints guide you to the next logical move without spoiling the fun.
Jot down candidates like on paper. Pencil marks auto-update as you fill the grid.
A fresh puzzle every day. Keep your streak alive and sharpen your skills.
Beautiful, comfortable themes for day and night play — easy on the eyes.
No account, no personal data required. Your progress stays in your hands.
Read the PenguDoku legal documents in your language