Games like Orbit Engineer
Games like Orbit Engineer include Kingdoms and Castles, Manor Lords, Banished, IXION, and Foundation. We matched them by the tags players give Orbit Engineer on Steam (Simulation, Strategy, City Builder, Colony Sim, and Space Sim): closest matches first, and among equally close ones the better-known games.

Kingdoms and Castles
Shared: City Builder · Colony Sim · Simulation

Manor Lords
Shared: Strategy · Simulation · City Builder

Banished
Shared: City Builder · Strategy · Simulation

IXION
Shared: Strategy · City Builder · Colony Sim

Foundation
Shared: Simulation · City Builder · Strategy

Frostpunk
Shared: City Builder · Strategy · Colony Sim

Cities: Skylines
Shared: Simulation · City Builder · Strategy

Surviving Mars: Relaunched
Shared: Simulation · Strategy · City Builder

Prison Architect
Shared: Simulation · Strategy · Colony Sim

Ostriv
Shared: Strategy · Simulation · City Builder

Settlement Survival
Shared: City Builder · Colony Sim · Simulation

Against the Storm
Shared: Simulation · Strategy · City Builder

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

Dwarf Fortress
Shared: Simulation · Colony Sim · Strategy

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

Space Haven
Shared: Colony Sim · Strategy · Simulation

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

Anno 1800
Shared: Strategy · Simulation · City Builder

Infection Free Zone
Shared: City Builder · Strategy · Simulation

RimWorld
Shared: Colony Sim · Strategy · Simulation

Dawn of Man
Shared: City Builder · Strategy · Colony Sim

Norland
Shared: Simulation · Strategy · City Builder

Kingdoms Reborn
Shared: City Builder · Colony Sim · Strategy

Farthest Frontier
Shared: Strategy · City Builder · Colony Sim