I got pocket bomberman a while ago. You can use the game genie with game boy color games.
That website talks about it. Pass that on!
With that you might want to know how to make your own codes.
The codes won't be for specific things but it still does crazy stuff.
Make your codes 6 digits and letters long and then the first numbers down all the same
and 4th numbers down all the same.
I have a game genie website but I don't update it.