Pokémon Sleep, by contrast, will track sleep patterns and change the game based on how long the user sleeps, and what time he or she wakes up. The game will be developed with Niantic, the maker of Pokémon Go, and the game design firm Select Button.
Part of the motivation behind the new game is the need for a good night's sleep.
The companies involved in making the game released few details of how exactly sleep would be rewarded. Nintendo America, which owns part of the Pokémon franchise, will produce a separate sleep-tracking device called the Pokémon Go Plus+. When tucked beneath the user's pillow, it would send sleep data to a smartphone via Bluetooth.