CoKu

CoKu now features Daily Challenge, Mini Game modes, and smoother gameplay. Keep your streak alive and master colorful sudoku your way.

Welcome to CoKu, where classic Sudoku meets color-based strategy in a clean, modern puzzle experience.

This latest build adds Daily Challenge, new Mini Game modes for quick sessions, and Draw Mode so you can create your own colorful boards. It also includes smoother gameplay, UI polish, and performance improvements.

Instead of numbers, CoKu uses colors. Complete every row, column, and block with no repeated color in any section. It is easy to learn, visually clear, and satisfying to master. As you play, you earn stars by completing puzzles and can earn time bonuses for faster solves. Use stars to unlock helpful tools and improve your performance over time.

CoKu includes Easy, Medium, and Hard difficulty levels so you can choose a pace that fits your style, from relaxed practice to advanced challenge.

The experience is designed to feel responsive and polished, with intuitive touch controls, haptic feedback, dynamic scoring, and progress tracking in a dark-mode-optimized interface.