In a follow up to Call of Duty Ghosts' free multiplayer weekend, Activision is now offering players the chance at a free trail for the games recently released Onslaught DLC.

Players who haven't yet purchased and downloaded the new content will get to test out four new multiplayer maps. They are:

Fog -- "a small to medium sized map set alongside the banks of a murky lake, paying homage to classic horror films."

Bay View -- "a close-quarters map set on a coastal Californian boardwalk containing seaside gift stores and an aquarium."

Containment -- "a compact map set in a war-torn Mexican village, with a dried-out riverbed."

Ignition -- "An aging Florida space launch facility, inspired by the Scrapyard map from Modern Warfare 2."

Players will also gain access to a new assault rifle/sniper rifle hybrid weapon, Maverick, and will be able to play the first chapter.

The trial will be made available for download this Friday, March 21, and will end this Monday. Unfortunately for PlayStation owners, the trail will only be for Xbox One and Xbox 360, though it may come to other platforms at a later date.

Battlefield 4 has its own DLC coming up, as EA has announced that the newest update Naval Strike will be released on March 25 for Battlefield Premium subscribers and April 5 for other players.

Naval Strike features four new multiplayer maps -- Lost Islands, Wave Breaker, Nansha Strike, and Operation Mortar -- as well as a slew of new weapons and gadgets and a cool new hovercraft vehicle.

The most notable addition is the Carrier Assault mode, said to be an homage to Battlefield 2142's Titan mode. Teams will fight across land and water as they attempt to attack and infiltrate opposing team's carriers.

The trailer below will give you a great sense what Battlefield players can expect.

So who do you think is winning the battle of first-person shooters? Let us know in the comment section.