You can only get Arceus through Nintendo events if you don't want to use cheating devices.
It is virtually impossible to get Arceus without cheating on Pokemon diamond, pearl, or platinum. You can only encounter Arceus by either cheating or with an event. The same thing goes with the azure flute. ) :
Unfortunately, it's impossible without cheating. :(
you can't
Well you can go to the arceus event when the movie Arceus and the sky diamond comes out. that is a past event try a gllich
it is darkrai or garatina but i do have arceus but you have to cheat to do it hope it helped on i have no idea
Pokemon Diamond, Pearl, and Platinum have Arceus.
You can catch Arceus in Diamond, Pearl, or Platinum.
You can only get Arceus through a cheating device (like an Action Replay) or via Nintendo events however the only games you can get Arceus in are Pokémon Diamond, Pearl and Platinum Directions for Action Replay: Get the modifier cheat, have it on, press L&R (like it tells you), then run into grass, WITHOUT HOLDING L!
In Diamond, Pearl, and Platinum.
The only way to catch Arceus in Pokemon Platinum is by using the Azure Flute or cheating. The Azure Flute is an event item that sadly was never distributed. This means the only way to catch Arceus is by cheating.
platinum get arceus this year from a Nintendo event, get someone to trade you one from a platinum game
You cannot obtain Arceus without hacking or cheating.