DXS file format is a game save file format used exclusively by DeusEx, a computer game series offering first-person perspective gameplay that blends shooter and narrative elements, and strong emphasis on storytelling.

DXS file enables users to resume their previously saved progress in the game, including character information, obtained items, and achived levels. DXS save file can be created automatically by the game or manually by the user. DXS files on Windows system are stored by default in directory path <disk>:/users/user_name/documents/deus ex/save.