Games like Unholy Heights
Games like Unholy Heights include Prison Architect, Cities: Skylines, Oxygen Not Included, Banished, and Two Point Museum. We matched them by the tags players give Unholy Heights on Steam (Building, Colony Sim, Strategy, Cute, and Management): closest matches first, and among equally close ones the better-known games.

Prison Architect
Shared: Building · Colony Sim · Strategy

Cities: Skylines
Shared: Building · City Builder · Strategy

Oxygen Not Included
Shared: Colony Sim · Building · Management

Banished
Shared: Colony Sim · Strategy · City Builder

Two Point Museum
Shared: Building · Strategy · Simulation

Manor Lords
Shared: Strategy · City Builder · Building

RimWorld
Shared: Colony Sim · Strategy · Management

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

Ratopia
Shared: Building · Colony Sim · Strategy

Frostpunk
Shared: Strategy · City Builder · Colony Sim

Cities: Skylines II
Shared: Building · City Builder · Management

Against the Storm
Shared: Strategy · Building · City Builder

Two Point Hospital
Shared: Building · Management · Simulation

Two Point Campus
Shared: Building · Management · Strategy

Jurassic World Evolution
Shared: Building · Strategy · Management

Planet Zoo
Shared: Building · Management · Simulation

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

Empires of the Undergrowth
Shared: Strategy · Colony Sim · Building

Foundation
Shared: Strategy · City Builder · Building

Dwarf Fortress
Shared: Colony Sim · Strategy · Building

Stonehearth
Shared: Colony Sim · Building · City Builder

Ostriv
Shared: Strategy · Colony Sim · City Builder

Project Highrise
Shared: Building · Management · Strategy

Farthest Frontier
Shared: Building · Strategy · City Builder