There is a battle royale mode for battlefield 3 : r/battlefield3

Russian Army, Battlefield Wiki

Bf3: Battle Royale Your favourite last man standing game-mode is finally coming to Bf3 (Venice Unleashed).

Is Battlefield 3 or 4 better?

Does Battlefield 4 have the same game modes as Call of Duty like domination, hardpoint, kill confirmed etc.? - Quora

Modders Transform Battlefield 3 Campaign Into Multiplayer Maps

BF3 Highlight: ⚡damage the enemies⚡

Steam Workshop::Operation Firestorm (Battlefield 3)

Battlefield battle royale modders give in-depth look at fan-made mode - Charlie INTEL

Battlefield 3 Reality Mod Installation and Beginner's Guide Released

The Battle Royale mod

DICE say Battlefield 2042's Hazard Mode will move the battle royale concept on in a way only Battlefield can : r/battlefield2042