Is there a list of DS games that activate special functions if there is a specific GBA game present in the GBA slot?
I can think of:
Advance Wars: Dual Strike (extras if you have Advance Wars 1 and 2 in the GBA slot)
Castlevania Dawn of Sorrow (extras if you have Castlevania Aria of Sorrow)
What other DS games have unlockables when there is a specific GBA game in?