Genma Onimusha was released on the original Xbox. It was like a director cut of sorts with extra content.
From Wikipedia:
Onimusha: Warlords was ported to the
Xbox in 2002 under the title Genma Onimusha. It was announced by Capcom in May 2001 with the company expecting to be released by late 2001.
[14] The Xbox version contains many updates to the game including enhanced graphics, new 5.1
Dolby Digital audio, new explorable areas, a new boss, new costumes and body armor, changes in enemy placements, and a three-tier charge attack to each weapon.
Additionally, the inclusion of green souls adds a new dimension to the game. When five green souls are in the player's possession, the player can activate temporary invulnerability with a slow health recharge. Players frequently have to enter tug-of-war scenarios with the enemies over the possession of green souls; if a green soul is absorbed by a demon, the demon will gain new attacks and they will also see a dramatic increase in their defense. They will also release a greater number of souls upon death.
