sandbox game, Garry's Mod, physics-based interactions, ragdoll posing, prop placement, character customization, face posing, tool gun, construction, multiplayer, creative freedom, virtual playground, dynamic lighting, shadow effects, texture details, interactive objects, physics puzzles, custom maps, modding community, Steam Workshop, sandbox mode, in-game editor, 3D models, spawn menu, Lua scripting, game mods, user-generated content, Half-Life 2 assets, Valve games crossover, sandbox environment, PC gaming, user control, experimentation, digital creativity.