Sudoku Nexus is a next-generation Sudoku experience — four distinct game modes, beautiful design, and absolutely no ads. WHY SUDOKU NEXUS 100% ad-free — never interrupted Single-player, fully offline A clean, modern dark interface FOUR GAME MODES Classic — the timeless 9×9 logic puzzle Diagonal X — both diagonals must also hold 1–9 Hyper (Windoku) — four extra shaded regions to balance Killer — no givens; solve the cages by their sums FIVE DIFFICULTY LEVELS From Easy to Master, every puzzle is generated with a guaranteed unique solution. SMART FEATURES Daily Challenge with streak tracking Intelligent hints that teach real solving techniques Pencil notes with automatic cleanup Unlimited undo / redo Error highlighting, peer and same-number highlights Detailed statistics: win rate, best times, streaks Customizable accent colors and light / dark themes Whether you're a beginner learning your first techniques or an expert chasing a flawless Master solve, Sudoku Nexus is built for players — not advertisers. Download free and start solving today.