online multiplayer, first-person shooter, Call of Duty: Black Ops 4, active servers, team deathmatch, battle royale, Blackout mode, futuristic weapons, military uniforms, dynamic map, urban environment, explosion effects, realistic textures, HDR lighting, fast-paced action, 3/4 view, intense atmosphere, high-resolution textures, detailed character models, smooth animations, real-time shadows, strategic gameplay, voice communication, teamwork, competitive scene, gaming community, console and PC platforms, network stability, dedicated servers.