Games like Shroomchitect
Games like Shroomchitect include Stardew Valley, Tiny Glade, WorldBox - God Simulator, The Sims™ 4, and Townscaper. We matched them by the tags players give Shroomchitect on Steam (Simulation, Relaxing, Nature, Sandbox, and Colony Sim): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Relaxing · Simulation · Life Sim

Tiny Glade
Shared: Relaxing · Sandbox · Building

WorldBox - God Simulator
Shared: Simulation · Sandbox · Colony Sim

The Sims™ 4
Shared: Simulation · Life Sim · Building

Townscaper
Shared: Relaxing · Sandbox · Simulation

Paralives
Shared: Simulation · Life Sim · Building

My Dream Setup
Shared: Relaxing · Simulation · Sandbox

Timberborn
Shared: Colony Sim · Sandbox · Nature

Unpacking
Shared: Relaxing · Casual · Simulation

Hozy
Shared: Relaxing · Sandbox · Casual

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

Sticky Business
Shared: Relaxing · Simulation · Casual

Two Point Museum
Shared: Simulation · Casual · Sandbox

House Flipper
Shared: Simulation · Relaxing · Sandbox

PowerWash Simulator
Shared: Relaxing · Simulation · Casual

Minami Lane
Shared: Relaxing · Simulation · Casual

Planet Zoo
Shared: Simulation · Sandbox · Nature

SUMMERHOUSE
Shared: Relaxing · Sandbox · Casual

Prison Architect
Shared: Simulation · Sandbox · Building

Slime Rancher 2
Shared: Relaxing · Simulation · Cute

PC Building Simulator
Shared: Simulation · Sandbox · Building

Equilinox
Shared: Simulation · Relaxing · Sandbox

Farm Together
Shared: Simulation · Relaxing · Casual

Littlewood
Shared: Simulation · Relaxing · Life Sim