Games like DearCraft
Games like DearCraft include Kerbal Space Program, Space Engineers, Garry's Mod, Besiege, and WorldBox - God Simulator. We matched them by the tags players give DearCraft on Steam (Simulation, Indie, Sandbox, and Building): closest matches first, and among equally close ones the better-known games.

Kerbal Space Program
Shared: Simulation · Sandbox · Building

Space Engineers
Shared: Sandbox · Building · Simulation

Garry's Mod
Shared: Sandbox · Building · Simulation

Besiege
Shared: Simulation · Sandbox · Building

WorldBox - God Simulator
Shared: Simulation · Sandbox · Building

Prison Architect
Shared: Simulation · Sandbox · Building

Poly Bridge
Shared: Simulation · Building · Sandbox

Cities: Skylines
Shared: Simulation · Building · Sandbox

Two Point Hospital
Shared: Simulation · Building · Sandbox

House Flipper
Shared: Simulation · Building · Sandbox

Paralives
Shared: Simulation · Indie · Building

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Indie

Stardew Valley
Shared: Simulation · Sandbox · Indie

People Playground
Shared: Sandbox · Simulation · Building

Automation - The Car Company Tycoon Game
Shared: Simulation · Sandbox · Building

Planet Coaster
Shared: Simulation · Building · Sandbox

Graveyard Keeper
Shared: Simulation · Sandbox · Indie

Cities: Skylines II
Shared: Simulation · Sandbox · Building

My Dream Setup
Shared: Simulation · Building · Sandbox

Townscaper
Shared: Sandbox · Building · Simulation

Foundation
Shared: Simulation · Sandbox · Building

Gold Mining Simulator
Shared: Simulation · Indie · Sandbox

Project Zomboid
Shared: Sandbox · Indie · Building

Planet Zoo
Shared: Simulation · Building · Sandbox