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Ultimate Sudoku Collection

Ultimate Sudoku Collection

The best Sudoku game on Steam.

Released May 18, 2018 Developer Stanley Lam Platforms Windows · Mac Free to PlayIndieCasualPuzzleBoard Game
View on Steam ↗ Free (US · as of 2026-05-13)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-27.

77.3%positive198 reviews
Recommended · 12 found this helpful

“The free levels are neat. The graphics etc. are nothing special as you can see and there really is nothing more to it but there are several different variants of Sudoku I didn't know at all, so that was interesting. BUT if achievements are important for you, you should be warned…”

— a player, Steam review · 4 hrs played
Recommended · 0 found this helpful

“Yes”

— a player, Steam review · 13 hrs played
Not recommended · 2 found this helpful

“Like other reviews, I agree that there are far too few free sudoku puzzles to play. 10 free? I can go online and get 600 free then generate another 600, 600 times, for free. My main gripe with this in particular is actually just that all of the hard ones are too easy. I actually…”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

51all-time peak
0 25 50 2019 2021 2023 2025 No data collected for this period No data collected for this period 26 avg · May 2018

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-27.

92achievements
3.7%median completion
2.3%rarest: Basic Jigsaw Master
35.8% of players 13.1% of players 9.4% of players 6.6% of players 6.3% of players 5.9% of players 5.5% of players 5.4% of players 5.3% of players 5.2% of players 5.1% of players 5.1% of players 5.1% of players 5.0% of players 5.0% of players 5.0% of players 4.9% of players 4.9% of players 4.8% of players 4.6% of players 4.5% of players 4.4% of players 4.4% of players 4.3% of players 4.3% of players 4.0% of players 3.8% of players 3.8% of players 3.8% of players 3.8% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.7% of players 3.6% of players 3.6% of players 3.6% of players 3.6% of players 3.6% of players 35.8% 0% most earned rarest
Almost everyone has
35.8%Basic Rookie — Completed 5 levels of Basic Sudoku
13.1%Hyper Rookie — Completed 5 levels of Hyper Sudoku
9.4%Even Odd Rookie — Completed 5 levels of Even Odd Sudoku
Rarest badges of honor
2.3%Basic Jigsaw Master — Completed 250 levels of Basic Jigsaw
2.3%Basic Diagonal Master — Completed 250 levels of Basic Diagonal
2.3%Basic Anti Diagonal Master — Completed 250 levels of Basic Anti Diagonal

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 16, 2022
Update Notes for ver 1.4.5

Enabled Steam Cloud for syncing game progress between different machines. Before launching the game, Steam checks the cloud to see if any save file has a newer version there, probably uploaded from a

Jun 06, 2022
Update Notes for ver 1.4.4

Fixed a bug that caused the key 'A' not to show up in the memo for Tight-Fit Sudoku.

Jun 03, 2022
Update Notes for ver 1.4.3

- Improved the list of available window resolutions - The window size is memorized when resized manually

May 09, 2022
Update Notes for ver 1.4.2

- Adjusted the colors of highlighted cells

May 08, 2022
Update Notes for ver 1.4.1

- Added an option to change the input method (cell first or digit first) - Updated memo format - Highlight Matching Numbers can also highlight cells with same numbers - Touch a cell again to unselect

Games like Ultimate Sudoku Collection

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Pixel Puzzles Ultimate Jigsaw Puzzles Pixel Puzzles Ultimate Jigsaw Puzzles 70.5% · 1,247 reviews shares Board Game, Free To Play, Difficult, Puzzle Super Jigsaw Puzzle: Generations Super Jigsaw Puzzle: Generations 92.7% · 592 reviews shares Board Game, Free To Play, Difficult, Puzzle Puzzle Together Multiplayer Jigsaw Puzzles Puzzle Together Multiplayer Jigsaw Puzzles 81.5% · 1,951 reviews shares Board Game, Free To Play, Puzzle, Casual Keep Talking and Nobody Explodes Keep Talking and Nobody Explodes 98.1% · 9,619 reviews shares Board Game, Difficult, Puzzle, Casual Sigils of Elohim Sigils of Elohim 89.7% · 601 reviews shares Free To Play, Difficult, Puzzle, Casual Let the Cat in Let the Cat in 77.2% · 667 reviews shares Free To Play, Difficult, Puzzle, Casual Drop Alive Drop Alive 85.6% · 631 reviews shares Free To Play, Difficult, Puzzle, Casual OLDTV OLDTV 94.1% · 2,489 reviews shares Free To Play, Difficult, Puzzle, Casual

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-27.

GenresCasual, Free To Play, Indie
Player tagsFree to Play · Indie · Casual · Puzzle · Board Game · Difficult (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Family Sharing
LanguagesEnglish
Achievements92
Minimum system requirements (PC)

Minimum: OS *: Windows Vista SP1+ Processor: 2.0Ghz+ Memory: 1 GB RAM Graphics: Graphics card with DX10 (shader model 4.0) capabilities. Storage: 200 MB available space