NDS roms GAMES

i got some questions =]]1) Are the games same quality?
2)Do the games fit on the screen? cuz i heard one game cuts the bottom off of the game
3)And can you still do wifi? or play like mario kart with other people?thanks :D

1) yes they are identical
2) yes if you play on a flash cart, and probably if you play on an emulator
3) yes with flashcarts, although I believe there are still issues with download play on some games.

by any chance do you think or know if mario kart is a good wifi game for the r4dslol mario kart is like the main game i wanna play =p

The R4DS has some minor download play issues while carts such as CycloDS doesn't. Overall most carts support it though.