Star Wars: The Clone Wars Republic Heroes
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As of May 2, 2020, this game is not backwards compatible on the Xbox One. If you wish to play a Clone Wars game on the X1, the Lego Star Wars Clone Wars game is available on X360 and X1. If you want to check for other X360 games to play on the X1, there is an official page on the Xbox website that lists backward compatible games.
I'm not sure. If it is the original Xbox game that your looking for then probably not because this game is for the Xbox 360. Original Xbox to me means the classic Xbox that first came out before the Xbox 360. Sorry I couldn't be more help.