Games like Marvelous Marbles

Games like Marvelous Marbles include Garry's Mod, People Playground, Totally Accurate Battle Simulator, Kerbal Space Program, and House Flipper. We matched them by the tags players give Marvelous Marbles on Steam (Casual, Singleplayer, Simulation, Physics, and Sandbox): closest matches first, and among equally close ones the better-known games.