Cubdoku

Cubdoku is a cozy logic puzzle built around one simple rule set and an adorable bear cub mascot. HOW TO PLAY Place exactly one cub in every row, every column, and every colored region — and make sure no two cubs ever touch, not even diagonally. Mark cells you've ruled out with an X, use auto-marking to skip the busywork, and let the puzzle click into place. Easy to learn in under a minute. Genuinely hard to master as the boards grow from 5x5 up to 10x10 and the difficulty climbs from Easy to Expert. A NEW PUZZLE EVERY DAY Solve a fresh daily puzzle, build a streak, and watch your calendar fill in. Miss a day and your streak resets — so does tomorrow's puzzle wait for you either way. Your streak, stats, and puzzle history are all saved right on your device. 784+ HAND-VERIFIED PUZZLES Every puzzle in Cubdoku is generated and verified to have exactly one solution before it ships — no guessing, no ambiguity, just clean logic. Progress through five difficulty tiers (Tutorial, Easy, Medium, Hard, Expert) across six board sizes. COLLECT ADORABLE CUBS Unlock a growing collection of collectible bear cubs — from the Common Brown and Polar cubs all the way up to the Legendary Chef Cub — by playing puzzles and earning coins. Equip your favorite to play with. BUILT FOR FOCUSED, UNHURRIED PLAY - Hints when you're stuck, undo when you slip, and a mistake counter that's forgiving, not punishing - Auto-marking clears out impossible cells for you (optional — turn it off if you want the full manual challenge) - Color Assist adds a distinct pattern to every region, so the puzzle never depends on color alone - Optional haptics and sound effects; both can be turned off - No account, no sign-up, no internet connection required — Cubdoku plays entirely offline, and your progress is always saved locally FAIR, RESPECTFUL MONETIZATION Cubdoku is free to play. Occasional interstitial ads appear between puzzles (never mid-puzzle, never in your first several levels, never back-to-back) and are completely optional to speed past with a one-time Remove Ads purchase. Rewarded video ads are always voluntary — watch one if you want a bonus, or don't; nothing is ever locked behind a forced ad. Whether you've got sixty seconds or an hour, Cubdoku is ready when you are. One cub. Every row. Every column. Every region. Go. Terms of Use: https://cubdoku.michaelgaras96.workers.dev/terms/