Haunter evolves into Gengar after trading it to another player's game.
trade it then it will evolve
The same ones as in the blue and red versions ... Kadabra, Machoke, Haunter and Poliwhirl.
Yes, but if it learns and moves that do not happen to be in yellow version, then you cannot trade it back. Kadabra, Graveler, and Machoke can also be traded to evolve.
yes into a haunter and the trade it to evolve into a gengar
no level you have to trade dude
Machoke, Haunter, Graveler, Kadabra.
You have to trade it to an other game for it to evovle.
Haunter can only be evolved into Gengar via Trading (such is the case in all Pokemon titles that include Haunter, not just Silver).
Haunter doesn't evolve at any level to evolve your haunter you need to do a link trade with a friend and he he will then evolve
You evolve it into Haunter at Level 25. To evolve Haunter into a Gengar, you need to trade it.
You trade Haunter to another Diamond, Pearl, or Platinum version and it will evolve into a Gengar. You will need to trade back to your original Diamond game to get the Gengar. Hope I helped, bye
You'll need to trade for a Haunter in order for it to evolve into Gengar.