GridJoy: 18 Number Puzzles

Content rating
Everyone
100+
Downloads
Content rating
Everyone
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this game

Eighteen number puzzles. One ghost. Zero interruptions.

GridJoy is a free number puzzle game with 18 puzzle types in one calm app — Sudoku, Kakuro, Killer Sudoku, Calcudoku and 14 more. No subscription, no paywall, no in-app purchases, and no ads — anywhere, ever. Solve, earn cosmetics for your ghost companion, and come back tomorrow for a fresh daily.

YOUR GHOST COMPANION
A floating ghost mascot cheers you on. Customize it with 550+ cosmetics — hats, faces, halos, backgrounds, and body colours. Unlock new styles as you level up. Your ghost, your way.

18 NUMBER PUZZLE TYPES
Not just Sudoku. GridJoy includes:
- Sudoku (Classic, X, and Hyper variants)
- Kakuro (Cross Sums) — sum-clue number runs
- Calcudoku (Mathdoku) — cage arithmetic challenges
- Killer Sudoku (Sumdoku) — Sudoku meets Kakuro
- Inequality (Futoshiki) — greater-than logic puzzles
- Shikaku — rectangle partition puzzles
- Starlink (Hidato) — path-finding number chains
- Countdown — build target numbers from 6 tiles
- Number Crossword — numeric crossword grids
- Takuzu (Binairo / Binary Puzzles) — binary balance puzzles
- Hitori — shade duplicates
- Sumplete — row and column sum elimination
- Number Blocks — block placement logic
- Skyscraper (Towers) — border-clue visibility puzzles
- Mazes — linear path-finding grids
- Hex Mazes — hexagonal path puzzles
- Square Maze — classic wall-based mazes
- Circular Maze — radial path-finding

Each type has 5 difficulty levels from Easy to Master. Find your perfect challenge.

DAILY CHALLENGES & STREAKS
A new puzzle every day. Build your streak. Compare your solve time with players worldwide. Never run out of fresh puzzles.

SEASONAL EVENTS
Six rotating "Hauntings" throughout the year — each with unique cosmetic rewards. All free, no premium pass required.

SMART HINTS
Stuck? Every puzzle gives you three free hints, in three tiers that guide you without spoiling the solve:
1. See which numbers fit a cell
2. Learn the solving technique to use
3. Reveal a cell's answer

PLAY OFFLINE
Puzzles work offline — GridJoy generates them on-device. Solve anywhere, on the bus, on a plane, in the park. Your progress, leaderboards, and daily gifts sync when you're back online.

LIGHT & DARK THEMES
Choose your style. Beautiful dark glassmorphism for night-time puzzling, or a clean light theme for day. Switch anytime in Settings.

PROGRESSION SYSTEM
Earn XP for every solve. Level up to unlock new ghost colours and cosmetics. Complete missions for bonus rewards. Track your personal bests across all 18 puzzle types.

RANKINGS & CHALLENGES
Compete on global leaderboards — sorted by XP, solve count, streak, or puzzle mastery. Challenge other players to head-to-head number duels. See how you stack up.

MASTERY SYSTEM
Earn Bronze, Silver, Gold, and Diamond mastery per puzzle type. The harder you push, the more you unlock. Track personal bests across all 18 types.

FREE TO PLAY
No subscription. No premium pass. No in-app purchases at all. And no ads — none, anywhere, ever. No banners, no interstitials, no rewarded video. GridJoy is funded by one developer, not by your attention. That's it.

No reading required — every puzzle is numbers and logic, so language is never a barrier.

GridJoy — 18 number puzzles, one ghost, zero words.
Updated on
Jul 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

What’s new

• Your ghost now stands on every leaderboard — hat, halo and colours — instead of a profile photo.
• Countdown shows you the shortest path, and lets you replay the exact same grid to beat it.
• Shared solve cards carry more of you: your aura, your scene, your mastery rank, and a star for a new best.
• Exploring a dead end in a maze no longer costs your Perfect, hints now translate, and first-run screens feel warmer.