There are 20 different GO Parks, each capable of holding up to 50 Pokémon, giving a maximum capacity of 1,000 Pokémon. Each park contains a Play Yard.
One of the minigames
Once the player has 25 of the same species of Pokémon in the GO Park complex, a special minigame will begin in the Play Yard. In the minigame, the player is tasked with leading all the Pokémon into the goal area within the 3-minute time limit. If the player gets close enough to a Pokémon, it will follow the player. If the player bumps into one of the obstacles placed around the field, such as Diglett, Sandshrew, and Golem, the Pokémon currently following them will become surprised and run away. If all the Pokémon enter the goal area within the time limit, Candies will be awarded to the player.
The player will be able to catch any Pokémon transferred over from Pokémon GO. Let's Go, Pikachu! and Let's Go Eevee can receive any of the first 150 Pokémon, as well as Meltan and Melmetal. Mew and Pokémon with special accessories, such as Holiday Pikachu and Sunglasses Squirtle, cannot be transferred. Like transfers through Pal Park or Poké Transporter, these transfers are one-way only, and cannot be sent back to GO. Pokémon transferred from Pokémon GO will have a icon next to their names on the summary page. Although the Original Trainer will be set to the player in the Let's Go game, the Pokémon will still earn experience as if it were traded.
Pokémon transferred through GO Park have IVs reflect their stats in GO, multiplied by 2 and added 1. Because Special Attack and Special Defense do not exist in GO, they are set to be equal to Attack and Defense. Meanwhile, its Speed IV and Nature are determined at random, and can be reset for by saving before encountering the Pokémon and resetting until the desired result is met. Natures can be influenced by the fortune teller in Celadon City. The level will be the same as the Power Up level in GO, rounded down. Hence, a Pokémon caught in GO Park can range from level 1 to level 40.