|Chronicles of Riddick, The: Director's Cut (HD DVD)||=|
As mentioned the Australian HD DVD release is identical to the European release.
The American HD DVD includes the same extras and technical specifications.
The only minor differences are the Australian HD DVD includes more Dolby Digital Plus soundtracks (Italian Dolby Digital Plus 5.1 and German Dolby Digital Plus 5.1) and subtitle options (Italian, German, Swedish, Danish, Finnish, Dutch, Norwegian, Portuguese).
The American HD DVD release includes an English DTS 5.1 soundtrack option which is omitted from the Australian release.