Sudoku

■ A cozy sudoku you can play at your own pace

Sudoku (Number Place) is built around a warm, "cozy" look — soft pastels and earth tones, rounded boards, gentle background music and quiet sound effects. No harsh contrast, no flashy animations. Just you and the numbers, whether it's a short break or the last few minutes before bed.

■ 17,000+ puzzles, all offline

・Standard (9×9) — 4,000 puzzles
・Diagonal (X-Sudoku) — 4,000 puzzles
・Jigsaw — 4,000 puzzles
・Killer — 4,000 puzzles
・Various sizes (4×4 / 6×6 / 16×16) — 1,350 puzzles

Four difficulty levels: Easy, Medium, Hard and Expert.
Start with a 4×4 grid, or go all the way to 16×16 Expert.

■ Five board types

・Standard: no repeated digits in any row, column or block
・Diagonal: the two diagonals must also be free of repeats
・Jigsaw: irregular, color-coded blocks instead of 3×3 boxes
・Killer: the digits inside each dotted-line cage must add up to the small number in its corner — Hard and Expert puzzles start with no given numbers, so the sums are all you have
・Various sizes: the same rules on 4×4, 6×6 and 16×16 grids

■ Assists that keep you in the flow

・Memo (pencil mark) mode for candidate numbers
・Auto-remove memos when a number is confirmed
・Hints — up to 3 per puzzle; auto-fill the cell or just highlight it
・Unlimited Undo / Redo
・Remaining-number display: finished digits gray out
・Auto-complete for the last remaining digit
・Cage combinations for Killer — see which digit sets add up to the selected cage (can be turned off)
・Optional mistake highlighting — turn it off to solve unaided

■ Two input modes, switchable anytime

・Cell first: tap a cell, then tap a number
・Number first: hold a number and tap cell after cell

In both modes the app pre-selects the key or cell you're most likely to need next, so you keep moving.

■ Stop anytime, resume anytime

Your board is saved automatically on every move. Close the app, restart your device — tap "Resume" on the title screen and everything is exactly where you left it, memos and timer included.

■ Records worth coming back for

・Best time, star rating (0–3) and cleared / in-progress status for every puzzle
・Favorites, plus filtering by status or favorites
・A play-record screen with cleared counts, average clear time and total play time
・Google Play Games achievements and leaderboards

■ Make it yours

・Four themes (Beige, Dark Night, Sakura Pink, Mint Green)
・Adjustable board font size
・16×16 boards shown as numbers (1–16) or letters (1–9, A–G)
・Separate BGM / sound-effect toggles and BGM volume

Recent changes:
- Minor improvements and bug fixes. (2.2.1)
- Landscape mode is here. (2.2.0)
- Killer Sudoku is here. (2.1.0)