# Ultimate Sudoku Collection

Summer DB entity ID: 17bc23e9\-5b11\-4fa6\-b64a\-dcd881410cb6

Steam App ID: 851810

Ultimate Sudoku Collection contains several variations of Sudoku game\.    Sudoku basic rule: Fill numbers in the board such that every row, column and region contains one occurrence of each number\.     Features:  \- Beginner, Easy, Moderate, Hard and Expert difficulties for every game type  \- Tons of puzzles guarenteed to have only one solution  \- Easy note taking  \- Autosave the process of unfinished levels  \- Record best completion time for each level  \- Hint feature  \- Achievements    Current Game Types:  \- Basic  \- Gattai\-3  \- Gattai\-3 Diagonal  \- Gattai\-3 Anti\-Diagonal  \- Butterfly  \- Sohei  \- Flower  \- Samurai  \- Samurai Jigsaw  \- Samurai Diagonal  \- Samurai Anti\-Diagonal  \- Cross

## Game information

- Type: game

- Developer: Stanley Lam

- Publisher: Stanley Lam

- Release date: May 18, 2018

- Coming soon: false

- Free to play: true

- Parent Steam app: Not collected

- Genres: Casual, Free To Play, Indie

- Categories: Single\-player, Steam Achievements, Family Sharing

- Platforms: windows, mac

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/851810/ss\_074c1c364e9f890652ac0937f281894cdbd88d62\.1920x1080\.jpg?t=1667008740, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/851810/ss\_caa8bc0711d23bf0fc0c666c8fec6ccd27697670\.1920x1080\.jpg?t=1667008740, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/851810/ss\_121a228ee76d7932b4bb3435d7977b0096859ace\.1920x1080\.jpg?t=1667008740, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/851810/ss\_d55843e22e29dde29ec256963d10735c9318c34c\.1920x1080\.jpg?t=1667008740, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/851810/ss\_7de46b2b185ab84974e9b60cbe17b1ea4d09d956\.1920x1080\.jpg?t=1667008740

- Price: Not collected

- Price country: Not collected

## Observed metrics

- Current players: 9

- Steam review count: 197

- Steam positive reviews: 152

- Steam negative reviews: 45

- Steam positive percentage: 77.15736040609137%

- Summer DB rating: No native votes

Review filters: \{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}

## Player history

[Seven-day chart data as Markdown](/api/v1/entities/17bc23e9-5b11-4fa6-b64a-dcd881410cb6/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/17bc23e9-5b11-4fa6-b64a-dcd881410cb6/player-metrics?days=7)

Chart values are hourly observed maxima. The sampled 24-hour peak and missing intervals carry explicit coverage; history before collection is unknown.

## Sources and freshness

- Catalog membership: store\_catalog

- Catalog observed: 2026\-09\-28T16:58:32\.455488\+00:00

- Details observed: 2026\-09\-23T13:05:33\.260642\+00:00

- Player count observed: 2026\-09\-23T13:05:34\.527456\+00:00

- Reviews observed: 2026\-09\-23T13:05:34\.211586\+00:00

Full provenance: \{"urls":\{"price":null,"catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/851810/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=851810","reviews":"https://store\.steampowered\.com/appreviews/851810"\},"price":null,"source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-23T13:05:33\.260642\+00:00","players":"2026\-09\-23T13:05:34\.527456\+00:00","reviews":"2026\-09\-23T13:05:34\.211586\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":null,"catalog":"81e991cd\-a22c\-44ee\-b6d6\-03198f364205","details":"874904bf\-a832\-40fe\-bc91\-75d2ee5846f5","players":"ebc42fd2\-49f1\-4b1d\-a6af\-b726ec35f639","reviews":"49c1b34e\-e0d5\-4d4f\-8995\-068cfa965a99"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"17bc23e9\-5b11\-4fa6\-b64a\-dcd881410cb6","revision":0,"observedAt":null,"methodology":"arithmetic\-v1","distribution":\[0,0,0,0,0,0,0,0,0,0\]\}

Steam reviews are not Summer DB votes. Missing data is not zero. Player counts are observations, not historical peaks. A supplemental record does not establish that a game was delisted.

[Steam store](https://store.steampowered.com/app/851810/) · [JSON](/api/v1/games/17bc23e9-5b11-4fa6-b64a-dcd881410cb6)