i think you might need to have a action replay
you must have action replay to catch darkrai, it doesn't goes without.
get a darkrai from your friend[note if they want to trade)
The only way is to cheat the game with an Action Replay
Yes, but you will need the member card.
eat my balls
Action Replay or you could never get one without that pass... :-/
The only way to get a darkrai is for an event, i dont have one because i didn't have the game when it was on, you can get it without an event with action replay.
You can't. That is the simplelist answer. Without the mystery gift you can't access the Darkrai Event and since the Darkrai Event has been and gone, without action replay you cant get the mystery gift or cheat an encounter with a darkrai. So to put it simply you have to trade with someone.
you can not catch Darkrai in platinum you can only get it at special events or you can go to GTS and trade someone for it the last option is to get from a friend or use a master ball on a wild Darkrai or on someones caught Darkrai.
From a Nintendo Event/ Action Replay.
The only way to get Darkrai is to either get the event. Or use the Action Replay to simulate the event. Or you can hack the game and make an artificial Darkrai. OR you can just forget about it.
I don't know but I do know how to catch Darkrai in Diamond/Pearl without a cheat except an Action Replay. Use the tweaking glitch. You can find how to use the tweaking glitch at YouTube.