Games like Trappist
Games like Trappist include Dyson Sphere Program, Oxygen Not Included, Kingdoms and Castles, The Universim, and Timberborn. We matched them by the tags players give Trappist on Steam (City Builder, Colony Sim, Building, God Game, and Space Sim): closest matches first, and among equally close ones the better-known games.
Dyson Sphere Program
Shared: Building · Base Building · Space
Oxygen Not Included
Shared: Colony Sim · Building · Base Building
Kingdoms and Castles
Shared: City Builder · Colony Sim · Building
The Universim
Shared: City Builder · Colony Sim · God Game
Timberborn
Shared: City Builder · Colony Sim · Building
Prison Architect
Shared: Building · Colony Sim · Sandbox
Space Haven
Shared: Colony Sim · Base Building · City Builder
Manor Lords
Shared: City Builder · Base Building · Building
Planetbase
Shared: City Builder · Colony Sim · Base Building
Against the Storm
Shared: City Builder · Building · Base Building
Frostpunk
Shared: City Builder · Colony Sim · Building
Dwarf Fortress
Shared: Colony Sim · City Builder · Base Building
The Crust
Shared: Colony Sim · Base Building · City Builder
IXION
Shared: City Builder · Colony Sim · Space
Banished
Shared: City Builder · Colony Sim · Sandbox
RimWorld
Shared: Colony Sim · Base Building · Sandbox
Songs of Syx
Shared: City Builder · Colony Sim · Sandbox
Empires of the Undergrowth
Shared: City Builder · Colony Sim · Building
Settlement Survival
Shared: City Builder · Colony Sim · Building
Space Engineers
Shared: Building · Sandbox · Space
Workers & Resources: Soviet Republic
Shared: City Builder · Building · Base Building
Factorio
Shared: Base Building · Sandbox · Automation
Farthest Frontier
Shared: City Builder · Building · Colony Sim
Cities: Skylines
Shared: City Builder · Building · Sandbox