HD-DVD was released as an add-on to the Xbox 360, external to the internal DVD drive. The internal DVD drive could not play HD-DVD movies. Sony's PS3 had the b

HD-DVD was released as an add-on to the Xbox 360, external to the internal DVD drive. The internal DVD drive could not play HD-DVD movies. Sony's PS3 had the bluray player internally, as part of the base spec. https://en.wikipedia.org/wiki/Xbox_360_HD_DVD_Player https://en.wikipedia.org/wiki/Xbox_360_HD_DVD_Player It looks like it was released just days before the PS3 anyways. EDIT: We both seem to have posted this bit of information at the same time. Sorry!