The games in "Alice in Borderland" were created and designed by Mira Kano, also known as the Queen of Hearts. She was revealed as the mastermind behind the deadly games in the Borderlands, pulling the strings and manipulating the setup of the games throughout the series. Mira was initially presented as a player and member of "the Beach" but later revealed to be the gamemaster responsible for designing many of the individual games, including some of the most deadly ones.

Additionally, there are other gamemasters known as the King of Diamonds, the King of Clubs, and the King of Spades, who also have significant roles in organizing and overseeing the games.

In the narrative, the role of the ultimate creator or entity called the Joker is hinted at, suggesting a larger mystery around the origin of the Borderlands itself, but the direct creator of the games in the story visible to players is primarily Mira Kano.