About
GridRank
GridRank is a competitive puzzle platform for playing grid-based games, like Sudoku, Calcudoku, and Killer Sudoku. Climb the
leaderboards, and get ranked globally, by country, by age, and by gender.
What makes GridRank different?
- Play modes: play puzzles in different modes including solo play, duel play, tournament mode, and mirror mode.
- Diverse rankings: rank globally, by country, by age group, and by gender (optional), and more.
- Anti-cheat: behavioral signals flag unnatural solves; serial cheaters are removed from rankings.
- Puzzle creation: create new puzzles and challenge friends to solve them.
- Kid-friendly: if a player is under 13, purchases and personalized ads are disabled; gameplay remains available.
- Privacy-first: no emails or phone numbers required. Players pick a nickname and play anonymously.
- Light monetization: a token system with opt-in rewarded ads and optional purchases—no banner spam.
Play now
Puzzle styles
GridRank current supports 3 styles of grid-based puzzle with more coming.
- Sudoku – classic grid-based logic puzzle.
- Calcudoku – grid-based puzzle with mathematic rules.
- Killer Sudoku – Sudoku-like puzzle with cage sums.
Each guide includes rules and strategies for that style of puzzle.
Tokens & monetization
GridRank is free to join. No credit card required. We use an in-game token to monetize the game.
New players receive a starting balance of tokens. Each puzzle you play consumes 1 token. If you run out, you can earn more by:
- Watching a video ad
- Inviting other players to the game
- Creating puzzles
- Peforming other rewarded tasks, such as taking a poll
- Purchasing token bundles
Note that purchases and personalized ads are disabled for kids under 13.