Single-player games like 40 Days [四十天]
Below are 16 single-player Steam games similar to 40 Days [四十天], ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like 40 Days [四十天] page.
Ranked picks
- 1
Bio Inc. Redemption
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
Bio Inc.: Redemption is a realistic simulation and strategy game in which you make life or death decisions. Create a deadly illness to infect and torment your victim or play as the head of a medical team and hopefully find a cure to save your human patient. Will you be the plague or preserve humanity?
- 2
Plague Inc: Evolved
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.
- 3
The Fabulous Fear Machine
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
The Fabulous Fear Machine is a narrative-driven strategy game with a pulp horror style. As the Machine's new Master, you must sow fear and expand your influence by creating Legends, harvesting resources, manipulating events, and spying on your enemies.
- 4
Democracy 3
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
Have you ever wanted to be president? or prime-minister? Convinced you could do a better job of running the country? Let's face it, you could hardly do a worse job than our current political leaders.
- 5
Infectonator 3: Apocalypse
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
A campy, crazy pixelart zombie apocalypse arcade sim where you're the bad guy. Drop your virus and spread it across the globe while you unlock a whole horde of bizarre undead to do your bidding.
- 6
Bomber Crew
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Simulation with 40 Days [四十天].
Chocks away! Bomber Crew is a strategic simulation game, where picking the right crew and keeping your bomber in tip top shape is the difference between completing your mission or losing it all! USAAF DLC NOW AVAILABLE! FLY THE ICONIC AMERICAN BOMBER!
- 7
Game Dev Tycoon
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
In Game Dev Tycoon you replay the history of the gaming industry by starting your own video game development company in the 80s. Create best selling games. Research new technologies and invent new game types. Become the leader of the market and gain worldwide fans.
- 8
Dead In Vinland
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
DEAD IN VINLAND is a survival/management game, mixed with RPG and adventure elements, about a Viking family trying their best to survive on a mysterious island.
- 9
Unexpected Journey 奇幻之旅
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Indie with 40 Days [四十天].
This is your first family mission, you have to arm and equip yourself and, above all, survive attacks from deadly monsters. Defeat these strong monsters, collect 4 artifacts and emerge from this hostile island as a relic hunter.
- 10
Puzzle 101: Edge of Galaxy 宇宙边际
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Indie with 40 Days [四十天].
Edge Of Galaxy - very beautiful game of space jigsaw puzzle game! Collect the full image of the different small pieces. You can either play with very relaxing on Casual mode, Customize mode or Challenge Mode with time attack, snapping difficulty, adjustable pieces size and others.
- 11
打豹虎 Spider Derby
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Indie and Simulation with 40 Days [四十天].
Spider derby is a blood sport involving spiders that occurs in different forms in several areas of the world. In this game, you need to explore new land to catch new spider for fighting. At the same time, you need to train it even use a new spider to feed it.
- 12
Counter Terrorism - Minesweeper
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Indie with 40 Days [四十天].
Base on budget control to locate and capture those terrorists, stop them before the attack countdown. Gameplay method inspired by the minesweeper.
- 13
Business Wars - The Card Game
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
Business wars is a hardcore mix of strategy battles and business theory card game. Use your unique deck facing the business world situation, discover all possible strategy, and be the TOP 1 CEO in the business world!
- 14
This Throne Is Mine - The Card Game
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
You play as King of Qin, the one ended the 500-year civil war on this land. Act like a King to manage your follower and the royal court and unite the country. Ready to defence your throne?
- 15
Last Kingdom - The Card Game
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Strategy and Indie with 40 Days [四十天].
Last Kingdom is a hardcore strategy battles card game. Demon King was conquered your country, and now is sending the army to conquer the last kingdom. Bring your country survivor to help the last kingdom facing the army, discover all possible strategy, and defend the last kingdom in this land!
- 16
Natural
Single-player alternative to 40 Days [四十天] — playable solo, no multiplayer required. Shares Indie with 40 Days [四十天].
Very beautiful game of natural jigsaw puzzle game! Collect the full image of the different small pieces. You can either play with very relaxing on Casual mode, Customize mode or Challenge Mode. Support unique game modes like Rotation, Limited Pick, Blind, Black Hole, Color Layer, and so on.