Pokémon XD: Gale of Darkness (Japanese: ポケモンＸＤ 闇の旋風ダーク・ルギアPokémon XD: Whirlwind of Darkness, Dark Lugia) is Genius Sonority's second Pokémon game for the Nintendo GameCube as well as the second RPG in the Pokémon series for a home console. The game features a Battle Mode akin to that of its predecessor, as well as a Story Mode featuring a brand new plot set in the Orre region.
Much like Colosseum, Pokémon XD features similar gameplay to the main series of Pokémon games. Mechanics in Pokémon battles are directly adapted, and the game, similarly to its prequel, features mostly double battles during the Story Mode.
The game once again takes place in the Orre region, about five years after the events of Colosseum. In their second attempt at world domination, the criminal organization Cipher has created a Shadow Lugia, codenamed XD001, claimed to be immune to purification. A young trainer, Michael, aims to defeat Cipher and prevent their plans.
It starts with the S.S. Libra cruising, when suddenly some helicopters appear with Shadow Lugia, which picks up the ship as the sailors that fell out watch in awe. Then, Michael finds himself using Salamence to battle Metagross. No matter what the outcome is, the player will then find himself in the Pokémon HQ Lab, where the trainer will tell him to consider raising Pokémon other than Eevee. Michael then speaks with Professor Krane and Lily. Prof. Krane comments Michael's skills, with Lily worrying that Michael will become spoiled. Prof. Krane tells her not to worry, saying both Michael and his sister Jovi are both wonderful kids, reminding Lily that she hasn't seen Jovi since lunch.
Lily asks Michael to look for her. Michael looks around, finding a P★DA that Professor Krane left him in his room and gets an E-mail telling him to ask Adon, who was playing hide-and-seek with her. Adon tells him to look at Dr. Kaminko's house. Michael then sees a report about the missing cargo ship that was carrying loads of Pokémon, the S.S. Libra. Michael goes to Kaminko's house, where he is attacked by Chobin, who mistakes him for a burglar and sends out his Pokémon. After fending him off, Jovi shows up and asks what Michael is doing and asks if he is lost. Jovi then acts all high and mighty saying she knows that he is lost. Michael goes inside, and Chobin shoes a video of himself bragging about Kaminko's inventions that are harmful to mankind. Michael tells Jovi that It's time to go home, so Jovi calls back her Minun, Mimi, and follows Michael back to the lab. Jovi continues saying Michael was lost when Lily scolds her.
Jovi goes to find Aidan, as Michael talks to Prof. Krane and obtains the snag machine. Aidan adds a Shadow Monitor to the P★DA, and Professor Krane goes to ready the battle sim. However, some men come in and take Professor Krane away. Michael goes outside and finds everyone knocked out. Michael then battles the leader, Naps, who is using a shadowTeddiursa, which Michael snags. Prof. Krane is then dragged away by the kid nappers, as Michael watches in despair. Jovi is crying, and everyone looks sad, Aidan says Prof. Krane is crucial to the Purification Chamber project, and that there is nothing they can do. Lily then says they can complete it themselves, though Aidan says it is hopeless. Lily says they are on the verge of finishing and walks off, and Michael follows, starting his journey.
The hero of Pokémon XD is a young boy named Michael, trainer of an Eevee. Michael lives with his mother, Lily, and his younger sister Jovi. Professor Krane, a scientist researching Pokémon purification and a family friend, often assists him. A handful of other characters also appear, some returning from Colosseum and some new.
The game's setting is in the Orre region, altered after the five years that have passed. More wild Pokémon have started appearing, but Orre's land is still much less inhabited than other regions'. Pokémon XD features locations not present in Colosseum, as well as landmarks such as Mt. Battle returning.
These Pokémon are not catchable, but they have special roles in the game. The Herbalist's Munchlax will often appear at a Poké Spot and make the hero receive a false alarm that a wild Pokémon has appeared to eat his Poké Snacks. When the hero finds Munchlax, the Herbalist will appear to take it back to her store, and she will offer the hero ten more Poké Snacks for his trouble.
A girl's Bonsly can be found inside the S.S. Libra after it appears in the desert. This Bonsly is apparently a Pokémon that Cipher forgot to take to Cipher Key Lair. After saving Bonsly and taking it to the girl in Pyrite Town, she will allow the hero to play a special bingo card at Realgam Tower, which features Bonsly as a usable Pokémon.
In order to do the above, one needs to have completed the sidequest to unlock trading with Hoenn-based games in FireRed and LeafGreen.
Through exploitation of differences in linkup requirements, players can send Pokémon from XD to one of the handheld Hoenn games without beating the Elite Four, trading first to a game that has done so, trading from that to Pokémon Colosseum, and trading from Colosseum to the Hoenn game.
The "XD" in the title stands for 'eXtra Dimension'. However, fans sometimes poke fun at it because XD is an emoticon for a laughing face.
Before the release of Pokémon XD, Reggie Fils-Aime stated that Pokémon XD would not be a sequel to Colosseum, but rather a whole new game, having a similar style to Ruby and Sapphire.
Trainers that were in Colosseum who also appear in this game tend to still have the same Pokémon, but their levels and even stages of evolution are sometimes lower than they were in Colosseum.
If one trades a Pokémon from Pokémon Colosseum to a Game Boy Advance game and then to this game, it will say the Pokémon was met in a distant land, even though both Colosseum and XD take place in Orre. A similar oddity occurs if the reverse is done.
The game's name may be a reference to Lugia's codename before the release of Gold and Silver, Pokémon X.
Like in Pokémon Colosseum, Shadow Pokémon are banned from VS mode. Despite this, there are no restrictions on non-Shadow Pokémon that know Shadow moves (given to them by a cheating device). The same lack of restrictions also apply to Bonsly. It is unknown why this occurs.
Pokémon XD: Gale of Darkness and Pokémon Colosseum are the only RPG Pokémon games released after Pokémon Crystal not to give the player the choice of playing as either a boy or a girl.