Hey, I'm having a ton of fun with this game, but I encountered a glitch while I was playing, during my first fight with Timmy, I suddenly became unable to swap gems. They still lit up when I shoved my cursor over them, but they just refused to move.
I have seen this happen with some phones mostly. if it's an issue that persists, you can disable drag and drop from the options. Then you will only have to tap on two gems to swap them.
