Games like Kerbal Space Program: Making History Expansion

Games like Kerbal Space Program: Making History Expansion include Kerbal Space Program, Kerbal Space Program 2, Space Engineers, Empyrion - Galactic Survival, and Universe Sandbox. We matched them by the tags players give Kerbal Space Program: Making History Expansion on Steam (Simulation, Indie, Space, Sandbox, and Space Sim): closest matches first, and among equally close ones the better-known games.