Free games like Simple Sudoku
Below are 8 free-to-play Steam games similar to Simple Sudoku, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Simple Sudoku page.
Ranked picks
- 1

The Lab
Free-to-play alternative to Simple Sudoku — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 2

Jigsaw Puzzle Dreams
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Casual with Simple Sudoku.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!
- 3

Sprout
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Strategy with Simple Sudoku.
Embark on a casual, botanical-puzzle-adventure. Make friends, learn new skills, solve puzzles, and become the mighty oak that you were always meant to be.
- 4

Dota Underlords
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Strategy and Casual with Simple Sudoku.
Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.
- 5

KARDS - The WW2 Card Game
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Strategy and Casual with Simple Sudoku.
KARDS, The World War II Card Game, combines traditional CCG gameplay with innovative mechanics inspired by classic strategy games and real battlefield tactics. Take command and challenge other players in grand-scale warfare on the ground, air, or seas.
- 6

Learn to Fly 3
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Strategy with Simple Sudoku.
Build your spaceship from scratch, earn funds and invest them into building a bigger, better spaceship as you try and fly your way up to space!
- 7

GWENT: The Witcher Card Game
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Strategy with Simple Sudoku.
Command mighty Witcher-world heroes in epic online PvP card battles!
- 8

Lost Lands: Mahjong
Free-to-play alternative to Simple Sudoku — no purchase or trial window. Shares Casual with Simple Sudoku.
Solve many tile sets, quests and adventures to get your prizes and collections. Help the elves to survive on the lost island.