Sure, but this isn't particularly different from any other multiplayer FPS throughout the history of the genre. There's a bunch of common game modes that have

Sure, but this isn't particularly different from any other multiplayer FPS throughout the history of the genre. There's a bunch of common game modes that have been around forever, like deathmatch, team deathmatch, capture the flag, assault, king of the hill, etc. These game modes were reused repeatedly by pretty much any arena FPS that came out within a span of over a decade. Battle royale and team battle royale are simply the latest (very popular) game modes that most new FPSs are including. Zombie was the previous hot game mode, but that's cooled off a bit now.