Why there aren't more games like this, I don't know. This is just what us retro geeks need. =D
If you've got some time why don't you throw together a few for SNES, N64 and GameBoy. Or perhaps ones less on the games and more on the history of the system itself. (i.e. "What was the NES's main competition? Master System and Atari 7800" etc. etc.)
Kinda reminds me of those Pokémon games coming out for the DS.
You should consider doing other Flash games in this style.
I say you should keep going with this, but use something a little less messy like Super Mario Kart sprites or Mario Kart Super Circuit sprites. The backround was well done, however.
Best Sonic Game Ever
That game is the 1333est! I think it was even better than the Sonic Advance titles, though most of your game was based on them. Great work, buddy. Now we just need more Nintendo titles... *imagines a WarioWare flash game*
newgrounds.com — Your #1 online entertainment & artist community! All your base are belong to us.