Soundwave on 17 April 2013
There was a lot of confusion with the DS when it first came out because the GBA was still relatively new at that time (only 3 years old). People didn't know if this was some kind of stop gap Nintendo machine and no one really was into the touch screen.
When the DS Lite and NSMB came out, that's when the DS took off. The PSP also gave the DS fairly hard competition for a year and half.
