Mega Evolution is making a strong return in Pokemon Legends Z-A, introducing new twists to the franchise’s most popular battle gimmick. While the concept of using a Mega Stone to temporarily evolve a Pokemon is familiar, Legends Z-A changes how this buff is executed.
In this new system, Mega Evolution is no longer a once-per-battle boost. Instead, it can be used repeatedly once a rechargeable Mega Gauge is filled. The small mechanical change adds a layer of strategy to the game’s new real-time battle system.
Note: This article is based on the information currently available and datamines. More details will be provided upon the title’s official release.
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Everything to know about Mega Stones in Pokemon Legends Z-A

To activate Mega Evolution, the trainer must carry a Key Stone that resonates with the Pokemon’s specific Mega Stone. These two items are essential for triggering the transformation during battle.
Each Pokemon capable of Mega Evolution must hold its corresponding Mega Stone, such as Absol holding an Absolite. You can reportedly only own one copy of a Mega Stone for every Pokemon, and they cannot be discarded, sold, or traded.
Pokemon holding Mega Stones also cannot be traded as well, meaning you will need to earn them how the game intends you to. This also means that Kalos starters can only be obtained through ranked online battles.
Mega Evolution in Pokemon Legends Z-A functions as a temporary boost rather than a permanent state. Only one Pokemon can Mega Evolve per battle, but you can retrigger it as long as the Mega Gauge is fully charged. Once activated, the gauge will begin to deplete, and when it runs out, the Pokemon reverts to its normal form.
Also read: Pokemon Legends Z-A release countdown: Global release times
Pokemon Legends Z-A: Strategic use of the Mega Gauge

The Mega Gauge is the core of this new system. It gradually fills up during battle as you deal damage to opponents.
Additionally, every time you land a hit, the opponent drops Mega Power Orbs that can be collected by moving your character toward them. This fills the gauge faster. Then press the right analog stick to activate Mega Evolution.
The gauge slowly drains while your Pokemon is Mega Evolved, but staying on the offensive and constantly collecting orbs can help extend its duration.
Also read: All Mega Evolutions in Pokemon Legends Z-A
If you are interested in other topics related to Legends Z-A, check out these articles:
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- How to preorder Pokemon Legends Z-A
- Legends Z-A Day 1 Patch file size and details
- Latest Legends Z-A datamine hints at new Mega Evolutions, including Zeraora
- Why are people upset with Legends Z-A after recent Nintendo Direct?
- Latest Pokemon Legends Z-A leaks show character select screen
- Legends Z-A Mega Kalos Starters announcement might leave you disappointed
- Legends Z-A DLC announced, with Mega X and Y for beloved Gen I
🚨 Calculate how strong your evolved Pokémon will become with our newly launched Pokemon GO Evolution Calculator 🚨