Games like Shelter Manager
Games like Shelter Manager include Frostpunk, Banished, Kingdoms and Castles, Cities: Skylines, and Prison Architect. We matched them by the tags players give Shelter Manager on Steam (Simulation, Colony Sim, Economy, Post-apocalyptic, and Turn-Based Tactics): closest matches first, and among equally close ones the better-known games.

Frostpunk
Shared: Colony Sim · Post-apocalyptic · Survival

Banished
Shared: Colony Sim · Simulation · City Builder

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

Cities: Skylines
Shared: Simulation · City Builder · Management

Prison Architect
Shared: Simulation · Colony Sim · Sandbox

Endzone - A World Apart
Shared: Simulation · Post-apocalyptic · Survival

RimWorld
Shared: Colony Sim · Survival · Simulation

Manor Lords
Shared: Simulation · City Builder · Management

Dwarf Fortress
Shared: Colony Sim · Simulation · Management

Settlement Survival
Shared: Colony Sim · Simulation · City Builder

Foundation
Shared: Simulation · City Builder · Management

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

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

Oxygen Not Included
Shared: Colony Sim · Survival · Simulation

Empires of the Undergrowth
Shared: Simulation · Colony Sim · City Builder

Timberborn
Shared: Colony Sim · City Builder · Sandbox

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

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

Ostriv
Shared: Simulation · Colony Sim · City Builder

Infection Free Zone
Shared: Post-apocalyptic · Simulation · Management

Kenshi
Shared: Simulation · Survival · Post-apocalyptic

Jurassic World Evolution
Shared: Simulation · Management · Economy

Planet Zoo
Shared: Simulation · Management · Economy

Norland
Shared: Simulation · Colony Sim · City Builder