EA has made all five Battlefield 4 expansions free until next week.
China Rising, Second Assault, Naval Strike, Dragon's Teeth and Final Stand are all free to download for all platforms until 19th September (this coming Monday).
The promotion also includes new themed Community Missions to go along with each expansion. There are details on each on the Battlefield website.
After a rocky launch, Battlefield 4 turned into one of the best shooters around. Developer DICE has continued to update the game with a raft of patches, and there are still many thousands of players getting stuck in some three years after release.