Battlefield 4: Second Assault is an add-on for the dynamic multiplayer first-person shooter Battlefield 4. It contains four multiplayer maps from Battlefield 3 (Caspian Frontier, Operation Firestorm, Gulf of Oman and Operation Metro), 5 weapons, 2 vehicles, 5 achievements, 10 missions and Capture the Flag mode.
The add-on requires the original version of Battlefield 4.