offline mode, DMZ, single-player, no internet connection, realistic textures, abandoned buildings, overgrown vegetation, immersive environment, dynamic lighting, first-person perspective, survival gameplay, scavenging for resources, tactical gear, day-night cycle, weather effects, AI enemies, stealth mechanics, urban decay, post-apocalyptic setting, detailed map, high-resolution textures, atmospheric sound design, solo adventure, exploration, strategic planning, resource management, HDR graphics, volumetric fog.