The XY Series introduced Generation VI (Kalos) Pokémon and the new Fairy type. It also debuted Mega Evolution mechanics, BREAK cards, and continued to expand Full Art and Secret Rare treatments.
1) XY Base Set
- Japanese release: October 2013
- English release: February 2014
- Highlights:
- Debut of Fairy type (Sylveon, Xerneas)
- Introduced Mega Evolution (M Venusaur-EX, M Blastoise-EX)
- Set symbol: stylized “XY”
2) Flashfire
- Japanese release: December 2013 (Wild Blaze)
- English release: May 2014
- Highlights:
- Heavy Charizard theme (M Charizard-EX X/Y forms)
- Included Pyroar, Kangaskhan-EX
- Set symbol: fiery flame
3) Furious Fists
- Japanese release: March 2014 (Rising Fist)
- English release: August 2014
- Highlights:
- Focused on Fighting types (Lucario-EX, M Lucario-EX)
- Included Dragonite-EX
- Set symbol: fist emblem
4) Phantom Forces
- Japanese release: June 2014 (Phantom Gate)
- English release: November 2014
- Highlights:
- Introduced Mega Gengar-EX
- Featured popular Trainer VS Seeker reprint
- Included Dialga-EX, Aegislash-EX
- Set symbol: purple gate mask
5) Primal Clash
- Japanese release: December 2014 (Gaia Volcano / Tidal Storm)
- English release: February 2015
- Highlights:
- Featured Primal Reversion Pokémon (Primal Groudon-EX, Primal Kyogre-EX)
- Included M Aggron-EX, M Gardevoir-EX
- Set symbol: ancient wave crest
6) Roaring Skies
- Japanese release: March 2015 (Emerald Break)
- English release: May 2015
- Highlights:
- Iconic set featuring Rayquaza-EX / M Rayquaza-EX
- Included Shaymin-EX (hugely impactful in competitive play)
- Set symbol: winged crest
7) Ancient Origins
- Japanese release: June 2015 (Bandit Ring)
- English release: August 2015
- Highlights:
- Featured Hoopa-EX, Lugia-EX, Giratina-EX
- Expanded Ancient Trait mechanics
- Set symbol: swirling rune
8) BREAKthrough
- Japanese release: September 2015 (Red Flash / Blue Shock)
- English release: November 2015
- Highlights:
- Introduced BREAK Evolution mechanic (Zoroark BREAK, Mewtwo BREAK)
- Set symbol: jagged starburst
9) BREAKpoint
- Japanese release: December 2015 (Rage of the Broken Sky)
- English release: February 2016
- Highlights:
- Expanded BREAK mechanic (Greninja BREAK, Trevenant BREAK)
- Featured Mega Gyarados-EX
- Set symbol: shattering wave
10) Fates Collide
- Japanese release: March 2016 (Awakening Psychic King)
- English release: May 2016
- Highlights:
- Featured Alakazam-EX and M Alakazam-EX
- Expanded Zygarde forms
- Set symbol: interlocked chains
11) Steam Siege
- Japanese release: June 2016 (Explosive Fighter / Cruel Traitor)
- English release: August 2016
- Highlights:
- Final XY expansion
- Featured Volcanion-EX, Magearna-EX, dual-type cards
- Expanded BREAK Pokémon (Yanmega BREAK, Xerneas BREAK)
- Set symbol: fiery steam gear
Summary Timeline
- 2014 — XY Base Set, Flashfire, Furious Fists, Phantom Forces
- 2015 — Primal Clash, Roaring Skies, Ancient Origins, BREAKthrough
- 2016 — BREAKpoint, Fates Collide, Steam Siege
The XY Series ended with Steam Siege, giving way to the Sun & Moon Series, which introduced GX mechanics and the Alola generation.