Sleep types (Japanese: 睡眠タイプSleep type) are properties that apply to the Pokémon that can be encountered in Pokémon Sleep, as well as to the player's own sleep sessions. Sleep types determine which Pokémon will gather around the player's Snorlax in the game.
Slumbering type (Japanese: ぐっすりタイプDeep sleeping type): This corresponds to non-rapid eye movement sleep (NREM sleep), especially its Stage 3, also known as deep sleep.
The sleep type of a Pokémon typically depends on its type, though there are some exceptions. Additionally, all baby Pokémon are Slumbering-type.
When a player finishes tracking a sleep session, the game will analyze the time that the player spends on each sleep stage, and will categorize the player's sleep as Dozing, Snoozing, Slumbering, or Balanced (Japanese: 特徴なしUncharacteristic). The category of this sleep session will then determine the species of Pokémon that would gather around the player's Snorlax (with a Balanced sleep, the Pokémon that will gather will be of a variety of sleep types). During certain events, the Pokémon that gather around Snorlax will be of different sleep types, regardless of the player's sleep type of the day.
The Sleep Type Quiz in the official Pokémon Sleep website categorizes Diglett as a Slumbering-type,[1] even though it is Snoozing-type in the game.
The type of most Pokémon in Pokémon Sleep is based on their primary type from the main series games, though there are a few Pokémon which take after their secondary type. These Pokémon are:
