Onimusha: Warlords was ported to the Xbox in 2002 under the title Genma Onimusha, formally announced by Capcom in May 2001 with the company expecting to be released by late 2001. The overall game remains very similar with no changes to story. The Xbox version contains many updates to the game, including better graphics, new gameplay additions, and a new 5.1 Dolby Digital audio. There are no new weapons added, but the player can now find three different armors to wear, a ninja shinobi outfit, a grey colored samurai armor, and a fully masked samurai armor. When equipped, the in-game character model also changes. In contrary to this, the original armors that were found in the Playstation 2 version have been removed. The main new explorable area is a new tower area, which when finished will give Samanosuke the best armor in the game. Outside of new armor sets, the difficulty has also been increased with new enemy placements, as well as having enemies become superpowered if they are able to absorb the new green soul before the player can. The main new enemy is a killer doll who appears in certain scripted areas, following the character and dealing major damage. The doll is invincible and Samanosuke cannot defeat the doll in the game. Additionally, the second major difference in Genma Onimusha is the inclusion of green souls. 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 release a greater number of souls upon death. Lastly Samanosuke can now charge his magic attacks, dealing more damaged with longer charges.