Destroying Geo Symbols Can Greatly Increase the Bonus Gauge!
You fill the Bonus Gauge by attacking enemies or using items.
When you finish a battle, you will gain items according to how many Bonus Gauge Levels you attained. But you can also fill the Bonus Gauge by destroying Geo Symbols!
When Geo Symbols are destroyed, they change the color of the Geo Panels it was on.
The more Geo Panel colors you change, the more the Bonus Gauge will get filled.
Depending on how you place the Geo Symbols, you can create chain reactions that will massively fill the Bonus Gauge all at once!