Return to Castle Wolfenstein: Tides of War is an enhanced version for Xbox derived from the classic PC title. The game features the complete original single-player campaign along with seven additional prologue levels that detail the origins of protagonist B.J. Blazkowicz and Agent One, highlighting their capture at Wolfenstein Castle. Players receive a secret bonus upon discovering all hidden areas in each level.
Return to Castle Wolfenstein: Tides of War is an updated re-release for the Xbox based on the original PC version Return to Castle Wolfenstein. Next to the full, original singleplayer campaign, there are 7 new prologue levels that show how B.J. and Agent One first met and how they got captured and imprisoned at Wolfenstein Castle. There is also a secret bonus awarded at the end of every level when every secret area has been found.