Games like Outside the Blocks
Games like Outside the Blocks include Tiny Glade, My Dream Setup, Foundation, House Flipper, and Planet Zoo. We matched them by the tags players give Outside the Blocks on Steam (Sandbox, Design & Illustration, Building, Medieval, and Nature): closest matches first, and among equally close ones the better-known games.

Tiny Glade
Shared: Building · Design & Illustration · Sandbox

My Dream Setup
Shared: Design & Illustration · Building · Sandbox

Foundation
Shared: Sandbox · Medieval · City Builder

House Flipper
Shared: Design & Illustration · Building · Sandbox

Planet Zoo
Shared: Sandbox · Building · Nature

Townscaper
Shared: Sandbox · Building · City Builder

Timberborn
Shared: Sandbox · City Builder · Building

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

Cities: Skylines
Shared: Building · Sandbox · City Builder

FlowScape
Shared: Design & Illustration · Sandbox · Building

Prison Architect
Shared: Sandbox · Building · Base Building

Manor Lords
Shared: City Builder · Sandbox · Base Building

Banished
Shared: City Builder · Sandbox · Medieval

SUMMERHOUSE
Shared: Sandbox · Building · City Builder

Ostriv
Shared: City Builder · Building · Sandbox

Stronghold Crusader HD (2012)
Shared: Medieval · City Builder · Building

Canvas of Kings
Shared: Sandbox · Building · Design & Illustration

Medieval Dynasty
Shared: Building · Medieval · Sandbox

Planet Coaster 2
Shared: Sandbox · Building · City Builder

Planet Coaster
Shared: Building · Sandbox · Simulation

Kingdoms and Castles
Shared: City Builder · Sandbox · Building

Two Point Museum
Shared: Building · Sandbox · City Builder

Cloud Gardens
Shared: Sandbox · Nature · Building

Farthest Frontier
Shared: Building · City Builder · Medieval

