Games like Space Engineers Deluxe
Games like Space Engineers Deluxe include Totally Accurate Battle Simulator, Kerbal Space Program, Total Tank Simulator, Mount & Blade II: Bannerlord, and Stellaris. We matched them by the tags players give Space Engineers Deluxe on Steam (Simulation, Strategy, Indie, Action, and Space): closest matches first, and among equally close ones the better-known games.

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Sandbox

Kerbal Space Program
Shared: Simulation · Space · Sandbox

Total Tank Simulator
Shared: Simulation · Strategy · Action

Mount & Blade II: Bannerlord
Shared: Strategy · Sandbox · Action

Stellaris
Shared: Strategy · Space · Simulation

Space Pirates And Zombies 2
Shared: Strategy · Space · Indie

Space Engineers
Shared: Simulation · Sandbox · Space

Ultimate Epic Battle Simulator
Shared: Simulation · Strategy · Sandbox

Ultimate Epic Battle Simulator 2
Shared: Simulation · Strategy · Action

SPORE™ Galactic Adventures
Shared: Simulation · Action · Space

Between the Stars
Shared: Simulation · Space · Action

Ancient Warfare 3
Shared: Simulation · Strategy · Action

Animal Revolt Battle Simulator
Shared: Simulation · Indie · Sandbox

Your Only Move Is HUSTLE
Shared: Strategy · Action · Simulation

Game Dev Tycoon
Shared: Simulation · Indie · Strategy

SPORE™
Shared: Simulation · Sandbox · Space

Plague Inc: Evolved
Shared: Simulation · Strategy · Indie

X4: Foundations
Shared: Simulation · Space · Strategy

Reassembly
Shared: Strategy · Space · Sandbox

Banished
Shared: Strategy · Simulation · Indie

FTL: Faster Than Light
Shared: Strategy · Space · Indie

X Rebirth
Shared: Simulation · Space · Action

Celestial Command
Shared: Simulation · Indie · Strategy

We Who Are About To Die
Shared: Strategy · Simulation · Action