Game would be great if it didn't limit my play time and character progression through its energy mechanic. Energy is required to play levels. It SLOWLY regenerates (and you might get lucky and find a potion or gems to use?), which means that after a few minutes of playing you have to wait until it fills to continue. I feel like this is a common pitfall of games using this. How is it beneficial to lose players who get tired of having to wait to play, while knowing that the game wants you to ptp?