The Smuggler's Cave is a special area where players are given a special gem offer for real-world money. As players complete various tasks in the game, a meter will fill up. Once the meter is full, players will have a limited time to purchase 220 gems for $9.99. Once the time expires, players will need to once again complete tasks to fill the meter.
The following tasks fill the meter:
- spending gems
- completing purchases
- breeding monsters
- crafting eggs in the lab
- ranking up monsters in the lab
- winning battles in Adventure Map
- winning trophies in multiplayer
- progressing in the dungeons