Games like Terrarium Builder
Games like Terrarium Builder include Banished, Cities: Skylines II, Prison Architect, Stardew Valley, and Cities: Skylines. We matched them by the tags players give Terrarium Builder on Steam (Simulation, City Builder, Colony Sim, Relaxing, and Farming Sim): closest matches first, and among equally close ones the better-known games.

Banished
Shared: City Builder · Colony Sim · Simulation

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

Prison Architect
Shared: Simulation · Colony Sim · Sandbox

Stardew Valley
Shared: Farming Sim · Simulation · Relaxing

Cities: Skylines
Shared: Simulation · City Builder · Sandbox

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

Timberborn
Shared: City Builder · Colony Sim · Sandbox

Foundation
Shared: Simulation · City Builder · Sandbox

Ostriv
Shared: City Builder · Simulation · Colony Sim

Planet Coaster
Shared: Simulation · Relaxing · Sandbox

Planet Coaster 2
Shared: Simulation · City Builder · Sandbox

Manor Lords
Shared: City Builder · Simulation · Colony Sim

RimWorld
Shared: Colony Sim · Simulation · Sandbox

Dwarf Fortress
Shared: Colony Sim · Simulation · City Builder

Oxygen Not Included
Shared: Colony Sim · Simulation · Building

Townscaper
Shared: Relaxing · City Builder · Simulation

Planet Zoo
Shared: Simulation · City Builder · Sandbox

Against the Storm
Shared: Simulation · City Builder · Colony Sim

Farming Simulator 25
Shared: Simulation · Farming Sim · 3D

Stonehearth
Shared: City Builder · Colony Sim · Simulation

House Flipper
Shared: Simulation · Relaxing · Sandbox

Settlement Survival
Shared: City Builder · Colony Sim · Simulation

Songs of Syx
Shared: City Builder · Colony Sim · Sandbox

PC Building Simulator
Shared: Simulation · Sandbox · Building