Preview Slots, or Sneak Peek slots (previously known as Promo Slots) is a feature that allows players over level 10 to unlock a designated slot that’s not unlocked or released! In order to unlock a Preview Slot you have to fill a Win Meter next to your Level Up Experience Bar. There is only a limited time to fill the Win Meter otherwise the chance to unlock the slot is lost and your win meter will go away.
Once the Win Meter is full you’ll get access to the Preview Slot for limited time! Preview Slots occur every Tuesday and again Friday through Sunday.
Sharing Preview Slots: In some cases the game will prompt you to share your Preview Slot with your friends. If you do click the Share Button it will send your friends the Preview Slot for a limited time too!