On Tamgotchi V1, 2, 3, 4, 4.5, 5, and 6 it stays one day. On the TMGC+C.....it will stay for aroun5 minutes playing with the newborn. One the baby falls asleep, it will leave. :) I don't know anything about the Hexagontchi, or any other extremely new ones, srry. :furawatchi: ;)