Single-player games like Sixty Four
Below are 12 single-player Steam games similar to Sixty Four, 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 Sixty Four page.
Ranked picks
- 1

Idle Research
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
Idle Research is an addictive, resource management, incremental game with both idle and active playstyles. Research and craft colorful Flasks and Tubes to earn as much Energy as possible! Big numbers guaranteed.
- 2

Widget Inc.
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
A hybrid factory builder / incremental clicker game. Starting from humble beginnings, master the many crafting processes to build up resources and expand your factory. Then, using your newly automated production, unlock new technology and grow ever closer to your goal of spreading to the stars.
- 3

Factory Town Idle
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Indie and Simulation with Sixty Four.
An entire town builder experience packed into a living spreadsheet. Build housing, assign workers, then craft and sell a huge variety of items to level up your town and expand your civilization across the world!
- 4

Military Incremental Complex
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Simulation with Sixty Four.
Make weapons, make money. An active incremental game where you amass as much money as you can by starting a Military Industrial Complex company. Produce multiple different weapons, research upgrades, manipulate the stock market, and lobby the government for favors.
- 5

Cookie Clicker
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
An idle game about making cookies! Originally released in 2013 on the web, and actively developed since then. This is the official version for Steam.
- 6

Idle Colony
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
A condensed incremental experience, where you build a colony to collect and merge bigger and bigger fruits. Combine game-changing technologies and special upgrades to find the best synergies and take your cash flow to another dimension.
- 7

Beltmatic
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
Beltmatic is a casual factory game where you combine numbers using mathematical operations.
- 8

Microcivilization
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
Incremental clicker strategy, where you expand, construct, research, fight, collect heroes and make choices between good and evil. Ascend through difficulty tiers by playing through challenge campaign going back and forth through history. Mammoths included.
- 9

Stardew Valley
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Indie and Simulation with Sixty Four.
You've inherited your grandfather's old farm plot in Stardew Valley. Armed with hand-me-down tools and a few coins, you set out to begin your new life. Can you learn to live off the land and turn these overgrown fields into a thriving home?
- 10

Satisfactory
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 11

Production Line : Car factory simulation
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy and Indie with Sixty Four.
Production line is the new car factory management/simulation/tycoon game that pushes your organisational and entrepreneurship skills to the limit. Can you build the ultimate optimised, free-flowing car production line whilst beating the competition and still turn a profit?
- 12

Mindustry
Single-player alternative to Sixty Four — playable solo, no multiplayer required. Shares Strategy with Sixty Four.
An open-ended factory management game with RTS and tower defense elements.