1.30.2
1. Upgrade Google billing library.
2. Fix bugs reported by players.
1.9.9
1. Try lowering the game difficulty again.
1.9.0
1. Added trial copy, from which players can get the key to the Force Treasure Chest.
1.8.3
1. Fix the display problem of the box. It would be downgraded before, but now it won't.
2. Repair some values.
1.2.0
1. Modify and optimize some UI interfaces.
2. Adjust the difficulty of game levels according to some players' feedback.