Sudoku Hub: Ultimate Edition reimagines the classic number puzzle with a unique Richter Scale difficulty system — just like measuring earthquakes, your puzzle difficulty is rated precisely from 1.00 to 4.00. RICHTER SCALE DIFFICULTY Forget Easy/Hard labels. Every puzzle has a precise Richter score that reflects its true challenge. Watch your score climb as you master harder puzzles. GAME FEATURES • Classic 9×9 Sudoku with beautiful board design • Diagonal, Odd-Even and more puzzle variants • Smart hint system to guide you when stuck • Error tracking and real-time validation • Auto-notes and candidate highlighting • Pause & resume any time DAILY PUZZLES A fresh puzzle every day. Maintain your streak and compete globally on the Daily leaderboard. GAME CENTER Compete with players worldwide. Separate leaderboards for every difficulty level. Earn achievements as you improve. THEMES 12 beautiful themes including Ocean, Neon, Midnight, Gold, Forest and more. Personalize your board, cells and number style. STATISTICS Track your progress with detailed stats — games played, win rate, best times and XP level system from Explorer to Legend. PREMIUM Go ad-free and unlock unlimited hints, all themes and the full experience with a single one-time purchase. No subscription, ever. Available in 36 languages, including English, Turkish, German, French, Italian, Spanish, Chinese (Simplified & Traditional), Russian, Japanese, Portuguese, Arabic, Hindi, Korean, Czech, Hebrew, Malay, Thai, Dutch, Polish, Swedish, Ukrainian, Vietnamese and more.
Games:Board · iPhone, iPad · Free
