Do not buy gems - gambling ripoff

You can buy gems and then spend them on a slot machine for the chance of getting better items to upgrade your birds. I spent about $100 on gems and "won" a bunch of items that were not as good as the items I already had. $100 for literally nothing. I was excited to get some better items. Instead I am angry and embarrassed. This game should be regulated by gambling laws.

BigPerm555 about Angry Birds Fight! RPG Puzzle, v2.4.7