Games like Unmoored Isle
Games like Unmoored Isle include Cities: Skylines, Cities: Skylines II, Manor Lords, Kingdoms and Castles, and Prison Architect. We matched them by the tags players give Unmoored Isle on Steam (Time Management, 3D Platformer, Shop Keeper, City Builder, and Sandbox): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: City Builder · Building · Sandbox

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

Manor Lords
Shared: City Builder · Strategy · Sandbox

Kingdoms and Castles
Shared: City Builder · Strategy · Sandbox

Prison Architect
Shared: Sandbox · Building · Strategy

Foundation
Shared: City Builder · Sandbox · Strategy

Banished
Shared: City Builder · Strategy · Sandbox

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

Against the Storm
Shared: City Builder · Strategy · Building

RimWorld
Shared: Sandbox · Strategy · Survival

Two Point Museum
Shared: City Builder · Strategy · Building

Timberborn
Shared: City Builder · Sandbox · Building

Ostriv
Shared: City Builder · Strategy · Building

Jurassic World Evolution
Shared: Building · Sandbox · Strategy

Dwarf Fortress
Shared: City Builder · Strategy · Sandbox

Settlement Survival
Shared: City Builder · Building · Sandbox

Infection Free Zone
Shared: City Builder · Strategy · Survival

Frostpunk
Shared: City Builder · Strategy · Survival

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

Endzone - A World Apart
Shared: City Builder · Strategy · Survival

Planet Coaster
Shared: Sandbox · Building · Strategy

Jurassic World Evolution 2
Shared: Building · Sandbox · City Builder

Planet Zoo
Shared: Sandbox · City Builder · Building

Let's School
Shared: City Builder · Strategy · Sandbox