Games like UNIT 42: Adrift in Space
Games like UNIT 42: Adrift in Space include Dyson Sphere Program, Factorio, Satisfactory, Oxygen Not Included, and The Alters. We matched them by the tags players give UNIT 42: Adrift in Space on Steam (Adventure, Space, Resource Management, Base Building, and Automation): closest matches first, and among equally close ones the better-known games.

Dyson Sphere Program
Shared: Space · Automation · Base Building

Factorio
Shared: Resource Management · Base Building · Automation

Satisfactory
Shared: Base Building · Automation · Crafting

Oxygen Not Included
Shared: Base Building · Resource Management · Management

The Alters
Shared: Base Building · Management · Resource Management

The Last Caretaker
Shared: Base Building · Automation · Crafting

shapez
Shared: Resource Management · Base Building · Automation

Captain of Industry
Shared: Resource Management · Automation · Base Building

Astrometica
Shared: Adventure · Space · Crafting

The Planet Crafter
Shared: Base Building · Space · Crafting

The Crust
Shared: Space · Base Building · Resource Management

Stationeers
Shared: Base Building · Automation · Resource Management

ASTRONEER
Shared: Space · Base Building · Adventure

Star Birds
Shared: Resource Management · Base Building · Automation

Schedule I
Shared: Management · Simulation · Automation

Astro Colony
Shared: Space · Base Building · Automation

Mr. Prepper
Shared: Base Building · Adventure · Resource Management

SpaceCraft
Shared: Space · Adventure · Sci-fi

This War of Mine
Shared: Base Building · Resource Management · Crafting

Planetbase
Shared: Space · Base Building · Resource Management

No Man's Sky
Shared: Space · Adventure · Sci-fi

Space Haven
Shared: Base Building · Space · Management

Nova Lands
Shared: Adventure · Base Building · Automation

Factory Town
Shared: Resource Management · Base Building · Automation