If you’ve been playing Pokémon Legends: Z-A and are wondering how to evolve Gengar, you’re not alone. The evolution path for Gengar in this game follows a familiar chain, but with a twist. Below is a clear, easy to read guide (around 800 words) that explains how to evolve Gengar in Legends Z-A, along with tips and cautions to keep in mind.

In Pokémon Legends: Z-A, Gengar is the final stage of the Gastly evolution family. The chain goes:
- Gastly → (level up) → Haunter
- Haunter → (trade with another player) → Gengar
You cannot evolve Haunter into Gengar by leveling it further, using items, or by in-game NPC exchanges. The only confirmed method is through a player trade. (This is different from some earlier Pokémon games, where trade evolution items or linking cords existed. In Legends Z-A, those are not available for this line.)
Step by Step: How to Get Gengar
Here’s a more detailed walkthrough of how to evolve a Haunter into Gengar in Legends Z-A:
- Catch or acquire Gastly
Gastly is the base form. In Legends Z-A, Gastly can be found in Wild Zone 4, a region in the northern part of Lumiose City. It may spawn at various times of day, so check during different hours. - Level Gastly to 25
When your Gastly reaches level 25, it will evolve into Haunter automatically. - Prepare to trade Haunter
Make sure your Haunter is ready. You may want to ensure it has a good moveset, EVs (if the game includes them), or is in the condition you want before trading. Remember that once the trade is done, the evolution into Gengar happens during that trade. - Find someone to trade with
This is the crucial step. You must trade your Haunter with another player (online) so it evolves into Gengar. After the trade, the other player can trade it back to you, giving you your Gengar. Because trade evolution is required, you’ll need access to the game’s multiplayer/trading system. - Complete the trade and receive Gengar
Once the trade is accepted, your Haunter evolves into Gengar. If your trading partner returns it to you, you end up with a Gengar.
Why Trade Evolution? A Quick Note
The reason Gengar’s evolution requires a trade in Legends Z-A is that the developers removed alternate mechanics that existed in some other games (like linking cord or special evolution items). Community sources confirm that trade is the only method to evolve Haunter into Gengar in this game.
This is a design decision that encourages multiplayer interaction. It’s similar to older core Pokémon games, where certain evolutions were always tied to trading.
Extra Options & Workarounds
If you can’t find someone to trade with, or you want alternate ways to get Gengar, here are a couple of ideas to explore (though they may not always be available):
- Using Nintendo Switch Online / multiple accounts
Since trading often requires online functionality, you can use a secondary account or ask a friend and coordinate the trade. If you have multiple consoles or accounts, you might trade between them. - Catch Gengar in the wild or from NPCs (rare cases)
Some community guides mention that later in the game, you may find Gengar appearing in specific areas (for example, in Wild Zone 20 or the “Old House”) as a wild or alpha Pokémon. But these instances are rare and not the reliable method to get one. The core method remains trade evolution.




