The simple joy of catching and battling pocket monsters has always been enough for Pokemon to sell like gangbusters, but each new iteration still has some type of novel gimmick to shake up the gameplay -- and the upcoming Pokemon Legends: Z-A includes one of the most popular ones ever introduced: mega evolutions .
Mega evolutions made their debut in Pokemon X and Y over a decade ago, and they quickly proved to be one of the most appealing new features. These powerful Pokemon forms are temporary evolutions that can only be activated once during each battle.
Mega evolutions are the synthesis of what makes Pokemon special for so many fans of the series. They're rare (not every Pokemon gets one), the designs build on existing monsters' looks and they add yet another layer to battle str