One of the purposes of this game is probably to kill time or simply to provide entertainment, but I was thinking that maybe it records the time each person is playing the game, and that this is used to measure which celebrities' fans are awake at what times.

Hmm, you're saying, "People probably leave it running not only while they're sleeping, but also during work or school, so even if it were measuring, you wouldn't know"? I didn't expect to be refuted by my own thinking while I was writing this.

However, since it requires being left running unattended, people usually open it during their free time.

A completely meaningless analysis | サハ"にわ's post