Talk:Advent Fairy/@comment-27254322-20151212102237/@comment-6709481-20151212212823

Gambling stuffs are normal in mobile games. 99% of micro-transaction games have RNG and gambling in them.

The slot chance is just random. But doing 1-1 is good because they can spawn a Bonus Area (an area that can be open after you finish Area 5-4). Also 1-1 uses less vitality so it is always good to do 1-1 IF you want to farm Bonus Area for Elemental Hall keys.