ReferencesNear the end, one of the creatures you encounter is a "Tetsuo". This misshapen baby-like blob is taken directly from the anime Akira.
TitleKnights of Xentar is actually part of the Dragon Knight series. For some reason Megatech couldn't get the rights to distribute the game with its original name so they had to change it for legal reasons (a common happening in the world of animé/manga translations), Megatech included their legal woes in the game however, and you can read all about it in the Hentai scene with the princess where she starts blabbling about how sad it is when legal crap gets in the way of good entertainment.
Version differencesThe English translation is supposed to be quite unfaithful to the original and the NR-13 rated version was created by Megatech by editing some pictures and removing some stuff. The only Japanese version is the full NR-18 release.
Information also contributed by Zovni