video game, Garry's Mod sandbox, interactive environment, physics-based gameplay, character posing, ragdoll manipulation, prop placement, creative building, multiplayer, user-generated content, diverse tools, face poser, colorable objects, texture effects, dynamic lighting, sandbox map, 3D construction, virtual physics, in-game editor, custom scenarios, modding community, Steam Workshop integration, sandbox mode, experimentation, digital lego, physics gun, tool gun, spawn menu, real-time collaboration, open-world exploration, screenshot composition, virtual sandbox, playful atmosphere, soft shadows, ambient occlusion.