Sudoku Challenger: Number Game

Sudoku Challenger is the ultimate sudoku puzzle and brain training game — classic 9×9 number puzzle with a competitive twist. Train your brain with logic puzzles across five difficulty levels, all tracked by a live ELO rating system that makes every sudoku solve count. 🎯 COMPETE WITH AN ELO RATING SYSTEM Every completed sudoku puzzle updates your ELO score in real time. Beat puzzles above your rank and earn bonus ELO — the higher the challenge, the bigger the reward. If your performance drops, your rating falls, keeping every session meaningful. 🏆 FIVE DIFFICULTY TIERS • Easy — perfect for beginners and warm-up sessions • Medium — sharpen your pattern recognition • Hard — where serious sudoku solvers prove themselves • Extreme — multi-step eliminations required • Grandmaster — the ultimate test of logical deduction Tiers unlock progressively: reach 3 wins in a tier to access the next, or let your rising ELO rank unlock them automatically. 🃏 RANK UP FROM NOVICE TO GRANDMASTER Your rank badge reflects consistent performance across hundreds of sudoku puzzles. Watch an animated ELO sparkline chart on your Profile screen and track exactly how your number puzzle skills are evolving. ❤️ LIVES & HINTS SYSTEM You start each puzzle with 3 lives. Wrong placements cost a life — run out and the game ends. Watch a rewarded ad to recover a life, or upgrade to Premium for a free bonus life every time you need it. 📊 DETAILED STATS & LEADERBOARD Dive into per-difficulty win rates, best solve times, average solve times, and your current win streak. Connect with Google Play Games for a global sudoku leaderboard and progress sync across devices. ⚙️ SETTINGS THAT RESPECT YOUR PLAY STYLE • Light / Dark / System theme with dynamic colour support • Sound effects toggle • Vibration / haptic feedback toggle ✨ GO PREMIUM — AD-FREE FOREVER Upgrade with a single monthly subscription to unlock: • No ads — banner, interstitial, and rewarded ads removed entirely • Free bonus life — an extra life every game, no ad required • Support ongoing development of Sudoku Challenger Pricing and trial details are shown at purchase. Cancel anytime. Subscription managed through Google Play. 🎮 BUILT FOR ANDROID Clean Material You design, adaptive dark/light themes with dynamic colour, smooth 60fps animations, and full TalkBack accessibility support. Privacy Policy: https://rxspectra.web.app/policies/privacy_policy.html