You evolve it into Haunter at Level 25. To evolve Haunter into a Gengar, you need to trade it.
Gastly evolves to Haunter at level 25. Then, Haunter evolves into Gengar by being traded.
It evolves at Lv25.
Gastly evolves into Haunter once it reaches level 25 or higher.
Gastly evolves once it reaches level 18. It evolves into a Haunter. To evolve Haunter into a Gengar, you must trade it to another player.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
Gastly evolves into Haunter at Lv25.
You evolve it into Haunter at Level 25. To evolve Haunter into a Gengar, you need to trade it.
To evolve Gastly into Haunter just get it up to level 25.
Gastly evolves at level 20 into Haunter
It evolves into Haunter at Level 25.
Gastly evolves to Haunter at level 25. Then, Haunter evolves into Gengar by being traded.
Gastly evolves to Haunter at level 25.
it has to level up
It evolves at Lv25.
Gastly evolves into Haunter once it reaches level 25 or higher.
Gastly evolves once it reaches level 18. It evolves into a Haunter. To evolve Haunter into a Gengar, you must trade it to another player.