I've tested GBC Rumble games using my EZ Flash OD cart, and they work as expected which is great. GBA rumble games do too, logically.
Having tested it, I'm curious if a GBC rumble rom via a DS flashcart and using a DS Rumble Pak actually works, I guess it's possible as the technology is there.
List of GBC Rumble Games: https://www.mygamer.com/everything-you-need-to-know-about-gbc-rumble-pak-games/?amp=1
By the way, Top Gear Pocket 2 U.S. version does not have rumble, but the Japanese version does and it has English text.
Having tested it, I'm curious if a GBC rumble rom via a DS flashcart and using a DS Rumble Pak actually works, I guess it's possible as the technology is there.
List of GBC Rumble Games: https://www.mygamer.com/everything-you-need-to-know-about-gbc-rumble-pak-games/?amp=1
By the way, Top Gear Pocket 2 U.S. version does not have rumble, but the Japanese version does and it has English text.