Single-player games like plexum
Below are 8 single-player Steam games similar to plexum, 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 plexum page.
Ranked picks
- 1

Corsair Cove
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation with plexum.
Build a sprawling pirate haven, raise a fleet to explore the high seas, and take on the Crown to keep the Age of Piracy alive! From ale to flintlock pistols, and from scallywags to swashbucklers, you’ll need to manage complex production chains and govern a rowdy crew to reign supreme over the seas!
- 2

Factorio
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation and Casual with plexum.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 3

Satisfactory
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Adventure and Simulation with plexum.
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!
- 4

Judgment: Apocalypse Survival Simulation
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation with plexum.
Build, scavenge, craft, and perform occult rituals to survive in a demon-infested, post-apocalyptic colony simulation. Will you survive Judgment day?
- 5

RAILGRADE
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation with plexum.
RAILGRADE is the train RTS game! Construct dense vertical railroads, build cities, construct vast factory chains with train automation! Restore an off world colony's economy all in the intense story driven campaign or relaxing sandbox mode!
- 6

Workers & Resources: Soviet Republic
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation with plexum.
Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity.
- 7

Little Big Workshop
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation with plexum.
Manage your workers, stations, machines and create awesome stuff as your little big workshop grows into your dream factory!
- 8

Autonauts
Single-player alternative to plexum — playable solo, no multiplayer required. Shares Simulation and Casual with plexum.
In Autonauts you must build, create, and automate. Start by establishing a colony, crafting bots and teaching them via Scratch-style programming to build an ever evolving autonomous paradise of agriculture, industry and enlightenment.