Games like Deep Space Remnant
Games like Deep Space Remnant include Dyson Sphere Program, Manor Lords, Cities: Skylines, Prison Architect, and Planet Coaster 2. We matched them by the tags players give Deep Space Remnant on Steam (Strategy, Simulation, City Builder, Space Sim, and 3D): closest matches first, and among equally close ones the better-known games.

Dyson Sphere Program
Shared: Space · Simulation · Base Building

Manor Lords
Shared: Strategy · Simulation · City Builder

Cities: Skylines
Shared: Simulation · City Builder · Strategy

Prison Architect
Shared: Simulation · Strategy · Base Building

Planet Coaster 2
Shared: Simulation · Strategy · City Builder

RimWorld
Shared: Strategy · Base Building · Simulation

Against the Storm
Shared: Strategy · Simulation · City Builder

X4: Foundations
Shared: Simulation · Space · Space Sim

Kerbal Space Program
Shared: Simulation · Space · Space Sim

Space Haven
Shared: Strategy · Simulation · Base Building

Workers & Resources: Soviet Republic
Shared: Strategy · Simulation · City Builder

Cities: Skylines II
Shared: Simulation · City Builder · Strategy

Planetbase
Shared: City Builder · Strategy · Simulation

Empires of the Undergrowth
Shared: Strategy · Simulation · City Builder

Space Engineers
Shared: Simulation · Space · Sandbox

IXION
Shared: Strategy · City Builder · Space

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Sandbox

Banished
Shared: Strategy · City Builder · Simulation

Stellaris
Shared: Strategy · Space · Simulation

Foundation
Shared: Simulation · City Builder · Strategy

Anno 1800
Shared: Strategy · City Builder · Simulation

Infection Free Zone
Shared: Strategy · City Builder · Base Building

Ostriv
Shared: Strategy · City Builder · Simulation

Hardspace: Shipbreaker
Shared: Simulation · Space · Singleplayer