Hard to tell with no picture. Try and post it on ValueJockey. The community there can tell you. It is free and you can post pictures. Good Luck.
http://www.valuejockey.com/
A usual DS game isworth $20. If it is used It Is used it is ranged $10-$15.
3/4 its original price
this DS lite that you are talking is about $140
It Depends Where You Buy It From, The Prises Are Below Dicksmith, $269.00
I have an old nentendo ds aswell they are worth about 50 dollars
10$ to 35$
220 Dollars
DS games are worth nothing.
1,000,000 yen
at gamestop around 50 0r 60 dollars
FREE!!!
On Harvest Moon DS (though I'm not sure which version you have) it is worth 40G.