In Pokémon Sleep, a player's sleep is important as it directly affects the gameplay. Each night, the player is required to place their smart device, which is equipped with an accelerometer and a microphone, next to their pillow before sleeping. By tracking the player's movements and sounds during sleep, the game will analyze and evaluate their sleep time, sleep cycles, and sleep quality.
Based on this data, the game will generate a Sleep Report in the morning, which can be used to improve the player's sleep pattern. The report will include information on how long it took the player to fall asleep, how many times they woke up during the night, and how long they were in each sleep stage (REM, light and deep sleep). This information can be useful in helping the player maintain a healthy sleep regimen.
Additionally, as the player sleeps, various Pokémon with different sleep styles will gather around them. Each Pokémon's sleep style is unique and discovering new ones is part of the game experience. The player's objective is to complete their SleepStyleDex by collecting data on each Pokémon's sleep style.
To aid in the collecting process, players can raise Snorlax, a popular Pokémon known for its love of sleep. Feeding Snorlax Berries earned through befriending other Pokémon, the player can increase its size and strength. The larger and stronger the Snorlax, the better the odds of encountering rare Pokémon with unique sleep styles.
Overall, Pokémon Sleep immerses players into a fun and educational game about sleep habits, and encourages them to take steps to improve their overall sleep health.