Pokemon Onyx and Amethyst are one of the paired versions of Pokemon Generation VI created by Nick.
The game takes place 5 years after the events of Diamond/Pearl/Platinum. The game focuses primarily on Pokemon From 4th and 5th gen, however, after the champion is defeated, pokemon from all realms will be roaming in the new areas, including some legendary pokemon like Articuno, Zapdos, Moltres, Ho-oh and Latios (onyx only) and Lugia and Latias (amethyst only). The starters are from Gen IV.
The game's main villains are Team Abyss and Team Luna. The games's version mascots are Darkrai and Cresselia, Team Abyss is after Darkrai, and Team Luna is after Cresselia. Team Abyss seeks the Void Stone, and Team Luna seeks the the Luna Crystal, both of which summon either Darkrai/Cresselia, depending on the game.
Team Abyss brings the Void Stone on Newmoon Island, and they summon Darkrai, which is enraged, and Team Abyss lose their control over it, the player must either catch it, or defeat it. Running away from it with result in the battle resetting itself, until Darkrai is defeated or captured. Team Abyss wants Darkrai's power in order to dominate Sinnoh, by making trainers have nightmares.
Team Luna brings the Luna Crystal on Newmoon Island, and they summon Cresselia, which is enraged, and Team Luna lose their control over it, the player must either catch it, or defeat it. Running away from it with result in the battle resetting itself, until Cresselia is defeated or captured. Team Luna wants Cresselia's power in order to cleanse Sinnoh from evil, however, Cresselia's power is out of control, resulting in the reverse effect. When Cresselia becomes enraged, the moon stops glowing, and darkness falls over Sinnoh.
The new characters are Keith and Katie, they are the characters the player may choose from the start. Barry is now helping Prof. Rowan, and he gives the player their starter Pokemon, the rival is Koj, he is a 12 year old boy, and lives in the town close to the player's new starting location - Lunbyss Town.
- Barry - User of Flying-types.
- Gardenia - User of Grass-types.
- Maylene - User of Fighting-types.
- Nick - User of Dragon-types.
- Crasher Wake - User of Water-types.
- Volkner - User of Electric-types.
- Roark - User of Steel types.
- Annie - User of Dark-types
- Flammery - User of Fire-types.
- Aaron - User of Bug-types.
- Sabrina - User of Psychic-types
- Joe - User of Bug-Types
- Champion Lucas/Dawn- Depending on the gender the player chooses.