video game, Grand Theft Auto V, Rockstar Games, activation code, digital key, gaming, realistic graphics, urban environment, Los Santos cityscape, dynamic lighting, action-packed gameplay, third-person perspective, immersive experience, detailed textures, high-resolution models, online multiplayer, street racing, heist missions, character customization, expansive open world, interactive NPCs, day-night cycle, weather system, advanced physics, 4K resolution, anti-aliasing, shadow effects, reflections, ambient occlusion, crime simulation, sandbox genre.