Ah, I did not notice those. They are most likely the default Gamecenter multiplayer mode where all the participants are connected to the "game" at the same tim

Ah, I did not notice those. They are most likely the default Gamecenter multiplayer mode where all the participants are connected to the "game" at the same time. We found a lot of limitations in this because you could only have one "game" connected at a time and this was not feasible for a reminders app. The new turn based game mode worked best for us because not everyone had to be connected at once for you to start and you could have multiple "game" sessions going on at once.