If your talking about the game id for action repaly codes the best thing you can do is insert your action replay then put in your game and the game id comes up on the bottom of the top screen under where it says unknown game just write it down and type it in. or you could try the internet
on the back of the ds game there will be a few letters or numbers that is the game id
go to buy it at market
The game ID shold be on the back of the game cartrige.
just look on the back of the game the number and or letters are the game id
Where do i find all the Id
On the front of the DS game card, near the bottom will be the game ID.
in the back of the game
at the back ( the little lines)
Each Pokemon diamond game has a different ID. You can find the ID by looking at the numbers in the lower left corner of your game cartridge.
its on the back of the game
This question is very general and doesn't specify a game platform for which the Game ID is to be obtained. But see the related questions below for a possible answer.
There is no such thing as an "id" in animal crossing.