Shadow RPG

The Dark RPG is the final Shadow Game played in the original series. It is a Dungeons and Dragons-style re-enactment of the Pharaoh Atem's reign, played by Yami Yugi against Yami Bakura. Each of the spirits has his own motive for playing: Bakura's is to resurrect the ancient monster Zorc Necrophades to the present, while Yami Yugi's is to learn his own name and defeat Zorc once and for all. While the circumstances of the game are rather vague in the anime (often appearing as if the game literally takes place in the past), they are explained in full in the manga.

Yami's Side
Yami begins the game in control. His goal is relatively simple: keep the Millennium Items away from Bakura until The Creator God of Light, Horakhty, can be summoned for game. Complicating this fact is that Yami does not know his own name, thus, his characters also do not know it, and therefore can't summon Horakhty. Little Yugi enters the game to retrieve it.

Characters
Yami's side's characters are based off of Pharaoh Atem and his courtiers. Most have a Millennium Item, which they must keep away from Bakura's characters.
 * Pharaoh Atem
 * Mahad
 * Isis
 * Shimon Muran
 * Shada
 * Karim
 * Priest Seto
 * Akhenaden (changes sides)
 * Hassan (summoned with Master Item)

Duel Spirits
To battle and to simulate Egyptian culture in general, Yami is provided with the following Duel Spirits.
 * Slifer the Sky Dragon
 * Obelisk the Tormentor
 * The Winged Dragon of Ra
 * Bastet
 * Battle Ox
 * Duos
 * Duos Dragon
 * Zelua
 * Helimai
 * Two-Headed Jackal Warrior
 * Gadius
 * Illusion Magician
 * Dark Magician
 * Spiria
 * The Wicked Worm Beast
 * Dark Shabu
 * Dark Shabudt
 * Spider
 * Blue-Eyes White Dragon
 * The Creator God of Light, Horakhty

Items
Yami begins the game with all seven Millennium Item Cards, which are equipped to his characters. Bakura can take these Items, however, so Yami must guard them by battling Bakura. His Master Item is a gold mask that transforms NPC Bobasa into Hassan, a powerful ally character.

Bakura's Side
Bakura's strategy in the game revolves around powering his side up by weakening Yami's side. While he has fewer Duel Spirits and items, they are afforded special abilities that let him increase their own power and Yami's pain, fitting Bakura's sadistic nature.

Characters
Bakura's chief character is his own past self, last survivor of the village whose souls were sucked out to create the Millennium Items. His goal is to summon Zorc; if Zorc is unleashed in the RPG's past, he will be in the real world's present, as well.
 * Thief King Bakura
 * Akhenaden (double HP bar)
 * Zorc Necrophades (triple HP bar)

Duel Spirits
Bakura is given the following Duel Spirits to help him in his plan.
 * Diabound (five forms)
 * Skeleton Fiend
 * Flying Eyeball
 * Flame Beast (anime only)

Items
Bakura's items consist of thee sand hourglasses, each with a different effect. Each glass can only be used once.
 * First glass - Rewinds time. Used to resurrect Diabound after Ra destroyed it.
 * Second glass
 * Third glass - Summons Zorc when all the Millennium Items are in place on Bakura's side.

In addition, Bakura, too, has a Master Item: Akhenaden's mummy, stolen from his father's museum. When used, it corrupts Akhenaden, turning him into a Shadow Priest. Bakura used this when Thief Bakura, at the time his sole character, was killed; the item gave him a new character and thus he could continue the game.

NPCs
Bobasa and Kisara exist as NPCs in the game. When certain conditions are met, they can transform into powerful alter-egos to aid Yugi's side. What would happen if Bakura's side met these conditions is unknown. Bakura's side itself appeared to have no NPCs beyond generic skeleton grunts.