Hacking nds flash card that plays gba games

[Yu-Gi-Oh 100]

Are there any cards out there that allow you to play gba games on it?

 

[notmeanymore]

Supercard DSTWO. Unless you mean for DS Lite, with the assistance of a GBA flashcart. If so, then just about every flash cart.

Otherwise, the DSTWO is the only one.

 

[Densetsu]

Check the sticky topics:

The Beginner's Guide to Nintendo DS Flashcarts
The "Which flashcart to get?" Info Thread

But yes, the short answer is the SCDS2.