Sleep in Pokémon TCG Pocket — officially named Asleep in the game — is a special condition which makes Pokémon unable to attack or retreat until the player successfully flips a coin landing on heads.

UPDATE: Publisher Spike Chunsoft has contacted IGN to clarify that the physical version of No Sleep For Kaname Date – From AI: THE SOMNIUM FILES for Nintendo Switch 2 is in fact a Game-Key Card title.