Sudoko! is a gamified daily Sudoku with streaks, XP, and speed runs. Everyone gets the same deterministic daily puzzle — fair competition, finally. Earn XP, level up from Seedling to Crown, and unlock 20 achievements. Streak Freezes protect you if you miss a day. 5 daily challenges with XP rewards. Speed Run mode for 5-minute brain sprints. Friends, global leaderboards, referrals. Full puzzle archive to replay any past day. Real-time cloud sync across devices. Free on Android.