The "EARTH DEFENSE FORCE: WORLD BROTHERS 2" Deluxe Edition is a deluxe package that includes the main game bundled with additional DLC coming after the game is released. Check the official website for details on DLC.

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--Deluxe Edition Contents--
① "EARTH DEFENSE FORCE: WORLD BROTHERS 2" Main Game
② Season Pass
--Additional Playable Characters--
1) BRB, Freebike Ranger (EDF5) Joins the Fight
2) Humanity's Security Officer, Ranger (EDF5) Civilian Outfit: Reskin
3) Sky Dancer, Wing Diver (EDF5) Civilian Outfit: Reskin
4) World's Greatest Engineer, Air Raider (EDF5) Civilian Outfit: Reskin
5) Incredible Cargo Loader, Fencer (EDF5) Civilian Outfit: Reskin
6) Colonist β, Heart of Brocade: Reskin
7) Cosmonaut β, Wearing a Helmet: Reskin
8) Additional Character ⑧
9) Additional Character ⑨
10) Additional Character ⑩
11) Additional Character ⑪
12) Additional Character ⑫
13) Additional Character ⑬

--Upcoming Major Content Update--
14) Extra Mission Pack (Details to be announced on the official website and other media outlets.)