Free games like Sudoku Killer / 杀手数独
Below are 8 free-to-play Steam games similar to Sudoku Killer / 杀手数独, 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 Sudoku Killer / 杀手数独 page.
Ranked picks
- 1

Travellin Cats in Paris
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie and Casual with Sudoku Killer / 杀手数独.
Find 100 cats hidden in Paris, France in this cute hand-drawn hidden object game by Travellin Cats - the original viral hidden cat game creator!
- 2

Coloring Pixels
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie and Casual with Sudoku Killer / 杀手数独.
A relaxing coloring by numbers game. Enjoy completing a variety of images with differing themes, complexity, and sizes.
- 3

An Arcade Full of Cats
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie and Casual with Sudoku Killer / 杀手数独.
Journey through gaming history's time and space, while searching for adorable feline companions in 'An Arcade Full of Cats,' the ultimate pet'em up hidden object game.
- 4

100 Asian Cats
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Strategy and Indie with Sudoku Killer / 杀手数独.
🏮🐈 100 Asian Cats - Join the cutest adventure in the Asia! 😻 🌸 Explore the charming hand-drawn artwork of Asian temples 🏯 as you embark on a quest to find 100 adorable cats hidden throughout the game. 🕵️♂️❌ Can you find them all? 🕵️♂️🐈✅
- 5

Floating Point
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie and Casual with Sudoku Killer / 杀手数独.
Floating Point is a peaceful, free game about using a grappling hook to swing yourself gracefully through randomly generated spaces. The only objective is to collect points, and the only thing that increases your points is swinging swiftly, smoothly and elegantly without hitting anything.
- 6

Control, I'm Not Coming Back
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie with Sudoku Killer / 杀手数独.
Control, I'm Not Coming Back is a short and emotional narrative game about a lost astronaut searching for a reason to keep going forward while facing the emptiness of space. Inspired by the Hopecore aesthetic, it’s a story about positivism, friendship and our human connection with Voyager 1.
- 7

Samorost 1
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Indie and Casual with Sudoku Killer / 杀手数独.
Explore the beginnings of the Samorost series in the space gnome’s original bite-sized adventure, formerly released in 2003. Now with remastered sounds, enhanced graphics, and new music by Floex.
- 8

100 Capitalist Cats
Free-to-play alternative to Sudoku Killer / 杀手数独 — no purchase or trial window. Shares Strategy and Indie with Sudoku Killer / 杀手数独.
🐱💼 100 Capitalist Cats - Join the cutest adventure in the Wall Street! 😻💰💵 Explore the charming hand-drawn artwork of New York, heart of Capitalism, as you embark on a quest to find 100 adorable cats hidden throughout the game. 🕵️♂️❌ Can you find them all? 🕵️♂️🐈✅