Ninjoku
A Roblox experience owned by Wren and Stone.
Description (written by the developer; not a statement by this register)
Challenge your mind with the classic number puzzle! Place digits 1-9 in every row, column, and box to solve the grid. Pick your challenge: Easy, Medium, Hard, or Expert. Use pencil notes to track possibilities, get hints when you're stuck, and undo mistakes freely. A new Daily Challenge awaits you every day! Track your stats, beat your best times, and build your win streak. Earn up to 3 stars on every puzzle based on speed and skill. Features: - 4 difficulty levels with endless puzzles - Daily Challenges - Pencil notes, hints, undo/redo - Auto-save and resume - Full keyboard and mobile support - Statistics and personal bests - Star ratings and win streaks
Last updated by the developer 4 Sept 2026, 16:20 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 27 Oct 2026, 13:01 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).