Single-player games like Illuminaria
Below are 9 single-player Steam games similar to Illuminaria, 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 Illuminaria page.
Ranked picks
- 1

Hammerting
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Manage a Dwarven mining colony in the unexplored mountains of Mara. As conflict rages in the Overworld, you will need to craft, explore and fight as you provide the allies of your choice with the finest weapons and gear to assist them in the battle for glory.
- 2

Per Aspera
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
- 3

Facteroids
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Facteroids is a 3D factory building game about asteroid mining in space. Prospect, mine and manage your production lines in a variety of scenarios and procedurally generated worlds across the entire Solar system.
- 4

Captain of Industry
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Build an industrial empire on a remote island. Mine resources, reshape terrain with excavators, grow food, construct factories, lay train tracks, and trade with the outside world. Research 100+ technologies to advance from basic metal smelting all the way to nuclear power and space flight.
- 5

Autonauts
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Indie and Simulation with Illuminaria.
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.
- 6

Moose Miners
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Take control of a mining operation run by moose. They mine and sell the gems. You need to decide where to spend the profits. Hire more miners and upgrade their gear. Buy new rails and minecarts to get deeper into the mine. The deeper you get the more valuable gems you will find.
- 7

Factory Town
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Build, automate, and optimize a giant factory on 3D terrain using conveyor belts, trains, chutes, pipes, and airships. Sell your goods to nearby villages to expand their borders, increase happiness, and unlock even better technology!
- 8

Automation Empire
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Build and manage a massive industrial network of factories, mines, and farms. Employ a fleet of trains, trucks, and robotic drones. In the age of automation, efficiency is survival!
- 9

Nanuleu
Single-player alternative to Illuminaria — playable solo, no multiplayer required. Shares Strategy and Indie with Illuminaria.
Nanuleu is a strategy game where you control a network of magical trees that protect the land from an invading dark force. Gather resources and grow trees to repel the invaders. Each tree has a different role to play in this battle to protect the land.