Games like ArmorSim
Games like ArmorSim include Kerbal Space Program, Spaceflight Simulator, Kerbal Space Program 2, Terraria, and Aviassembly. We matched them by the tags players give ArmorSim on Steam (Exploration, Side Scroller, Sandbox, Crafting, and Science): closest matches first, and among equally close ones the better-known games.

Kerbal Space Program
Shared: Sandbox · Science · Physics

Spaceflight Simulator
Shared: Sandbox · Exploration · Science

Kerbal Space Program 2
Shared: Exploration · Sandbox · Building

Terraria
Shared: Sandbox · Crafting · Exploration

Aviassembly
Shared: Sandbox · Exploration · Building

People Playground
Shared: Sandbox · Physics · 2D

Garry's Mod
Shared: Sandbox · Building · Physics

Universe Sandbox
Shared: Sandbox · Science · Physics

Scrap Mechanic
Shared: Sandbox · Building · Crafting

Space Engineers
Shared: Sandbox · Building · Physics

Stardew Valley
Shared: Sandbox · Crafting · Relaxing

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

Mon Bazou
Shared: Sandbox · Exploration · Building

Fireworks Mania - An Explosive Simulator
Shared: Sandbox · Exploration · Building

Potion Craft: Alchemist Simulator
Shared: Crafting · Sandbox · Relaxing

Out of Ore
Shared: Exploration · Sandbox · Simulation

Totally Accurate Battle Simulator
Shared: Sandbox · Physics · Simulation

The Forest
Shared: Crafting · Building · Exploration

Poly Bridge
Shared: Building · Sandbox · Physics

Satisfactory
Shared: Crafting · Exploration · Sandbox

SimplePlanes
Shared: Sandbox · Exploration · Building

A Game About Digging A Hole
Shared: Exploration · Sandbox · Crafting

TerraTech
Shared: Sandbox · Building · Crafting

Starbound
Shared: Sandbox · Crafting · Exploration

