interactive gameplay, Garry's Mod, adventure map, detailed environment, puzzle-solving, action poses, multiplayer, character customization, props, physics-based challenges, sandbox, exploration, teamwork, dynamic lighting, first-person perspective, immersive atmosphere, creative obstacles, textured surfaces, complex structures, hidden rooms, secret passages, ambient sounds, realistic shadows, virtual world, engaging, 3D models, modded content, user-generated, community-driven, Steam Workshop, diverse terrains, in-game tools, resource management, survival elements, cooperative play, strategy required.