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.
Next to the original features this port introduces a new shotgun weapon (singleplayer as well as for the Soldier and Engineer in multiplayer games), new equipment (Holy Cross, EMP Device and X-Shield), and new enemies (Occult Priest and X-Shepard). Multiplayer games support a split-screen two-player co-op mode, and matches with up to sixteen players through a system link or over Xbox Live. Downloadable content is also available. As a bonus, a fully playable version of the original Wolfenstein 3D can be played.