Board Thread:Chinese content/@comment-5760976-20150902223927/@comment-24275721-20151012174934

Phanminhnhat wrote: Not me. It makes me have to play the easy levels over and over again to get the Puzzle Pieces. There's a way to implement that system in our version with less frustrations:

Unlock the Upgrade System for each plant i.e level 1: 200 gems

Level 2 upgrade: 600 gems

Level 4 upgrade: 1500 gems

This way the gems will have another use and we'll get something even more powerful.