sci-fi testing ground entrance, atomic heart game, futuristic architecture, large metallic door, neon lights, warning signs, robotic guards, overgrown vegetation, rust and wear textures, concrete structures, abandoned vehicles, dystopian atmosphere, wide-angle shot, dramatic lighting, sunset glow, reflective surfaces, holographic displays, security cameras, atmospheric fog, desolate environment, 3/4 composition, high contrast, steel and glass materials, cyberpunk vibes.