i think it is that little bit of writting on the bottom of the game chip
the id number is on the ds on the back
SNK Vs Capcom: Card Fighters DS
Update,add the game ID to the actionreplay.
The game ID is ADAE-636791c0 and you can find out more at http://www.us.codejunkies.com
Its the number on the back of your DS cartridge! ;)
The ID for 3DS (as well as DS) games are located on the front of the game cartridge.
If you are talking about action replay ds then what you do is go to the games list click on add new game if you cant find the id number look it up on google type the id number then keep clicking next until it goes to the new game cheat list type your code there you go if you are not talking about action replay then i have no clue hope i helped :3
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You put the game name on and then put the game Id
you have to put the ID number of the game in it
at the back ( the little lines)
The game ID for a Nintendo DS game can be found on the cartridge. There will be a code, which is specific for each DS game.