In Pokemon Legends: Z-A, players collect Mega Shards, but the game doesn't immediately explain their purpose.
The game starts with a tutorial in Lumiose City, where players learn about Wild Zones and Battle Zones from their rival.
During this time, players encounter Mega Crystals, which can be shattered to obtain Mega Shards.
The true purpose of collecting Mega Shards in Pokemon Legends: Z-A isn’t immediately clear.
Author's summary: Pokemon Legends: Z-A introduces Mega Shards early on.