The game features all the roster from the Wii U plus these fighters:
In these fights, players choose 3 fighters to go into a fight similar to King of Fighters. When a fighter faints, the next fighter gets sent in to the fight with the opponent remaining at the same health.
Since all the characters are unlocked from the beginning, more the unlockables have shifted to alternate costumes to dress up the player character.
In January 2018, it was revealed in a Nintendo Direct that the game would be getting additional fighters as paid DLC called the Battle Pack. Wave 1 launches January 31 with the fighter Aegislash and the Support Pokémon Set featuring Mega Rayquaza and Mimikyu. Wave 2 launch March 23 with the fighter Blastoise and the Support Pokémon Set featuring Mew and Celebi.
Pokken Tournament DX gets "generally favorable reviews" on Metacritic holding a metascore of 79/100 based on 62 critic reviews. Meanwhile, on whatoplay.com it receives an aggregate score (playscore) of 8.11.