FAQ
Questions about GridJoy
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THE BASICS
- What is GridJoy?
- GridJoy is a free Android number puzzle game with 18 puzzle types — including Sudoku, Kakuro, Calcudoku, Killer Sudoku, Hex Mazes, and more. Every player has a ghost companion that grows alongside their skill. No mid-puzzle ads. No paywalls. Free to download.
- Is GridJoy free?
- Yes. GridJoy is free to download and play. All 18 puzzle types are unlocked from day one. All difficulty tiers are open from the start. No energy bars, no cooldown timers, no in-app purchases at all. An optional rewarded video earns you extra hints or daily gift recovery — you tap if you want it, it's never forced. The two non-optional placements are a brief interstitial when you return to the hub after a long session and banners on lobby screens (Home, Library, Leaderboard) — never on a puzzle.
- Does GridJoy work offline?
- Yes. Puzzles are generated on your device — no internet connection needed to play. Progress syncs to the cloud when you're online, but the core game works anywhere, anytime.
- Is GridJoy available on iPhone?
- GridJoy is currently Android-only. An iOS version is not available at this time.
PUZZLES + DIFFICULTY
- Which puzzle types does GridJoy include?
- 18 types: Sudoku, Calcudoku, Kakuro, Killer Sudoku, Hex Mazes, Square Maze, Circular Maze, Skyscraper, Hitori, Takuzu (Binairo), Shikaku, Sumplete, Starlink, Inequality (Futoshiki), Number Crossword, Number Blocks, Countdown, and Mazes. Each generates fresh puzzles across 5 difficulty tiers.
- How do difficulty tiers work?
- Each puzzle type has five tiers: Easy, Medium, Hard, Expert, and Master. All tiers are open from day one — there's no paywall or unlock gate. Harder tiers earn more XP and more Essence per solve.
- Are the puzzles unique every time?
- Yes. Puzzles are procedurally generated fresh on your device each session. You won't see the same puzzle twice in normal play.
- What is the daily puzzle?
- Every day a new Sudoku puzzle is generated from a shared seed — the same puzzle for every GridJoy player worldwide, fresh at midnight UTC. Solve it to keep your daily streak alive. You can also play the daily puzzle in your browser at gridjoy.app/daily.
GHOSTS + PROGRESSION
- What is the ghost companion?
- Every GridJoy player has a ghost companion that watches you solve puzzles and reacts to your moves. As you earn Essence, you spend it on cosmetics to customise your ghost — hats, auras, halos, eye styles, body tints, and backgrounds. No two ghosts look alike.
- How do I earn Essence?
- Solve puzzles. Every completed puzzle rewards Essence — more for harder difficulties, more for streak bonuses, more for flawless solves (no incorrect cells placed). There are no loot boxes, no artificial scarcity. The more you play, the more you have to spend.
- Do cosmetics affect gameplay?
- No. Every cosmetic is purely visual — hats, auras, halos, and backgrounds change how your ghost looks, nothing else. A player with a plain ghost and strong logic beats a heavily decorated ghost every time.
- What are mastery tiers?
- Each puzzle type has its own mastery track: Bronze → Silver → Gold → Diamond. Your mastery in Sudoku is tracked independently from Kakuro, Hitori, and so on. Reaching new tiers unlocks achievement badges for that puzzle type.
- Does my progress save if I uninstall?
- Progress syncs to the cloud when you're signed in. If you reinstall and sign back in with the same account, your XP, mastery, ghost cosmetics, and Essence are restored.
CHALLENGES + ARENA
- How do friend challenges work?
- Tap the challenge icon in any puzzle to generate a share link. Your friend receives the exact same puzzle — same board, same difficulty, same seed. Whoever solves it in the fastest time wins. Your ghost signs every challenge you send.
- What is the arena?
- The arena is where challenges live. You can see incoming challenges from friends, pending ones you've sent, and your head-to-head record. Visit gridjoy.app/arena to learn more.
ADS + MONETISATION
- What ads does GridJoy show?
- GridJoy never shows ads during a puzzle. Rewarded videos are optional — tap once to earn a hint or recover a daily gift. A brief interstitial may appear when you return to the hub after a long session. Banners appear on lobby screens (Home, Library, Leaderboard) only — never on a puzzle. That's the full ad surface. No pop-ups, no interruptions to your solve.
- Can I pay to remove ads?
- No — GridJoy has no in-app purchases at all, and there's no plan to add a Remove Ads option. The ad surface is deliberately minimal: rewarded videos are your choice, the hub interstitial is brief and infrequent, and lobby banners stay off the puzzle. If something feels intrusive, open a support request and we'll take a look.
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