What are you playing?

[Kriven]

SNES vs GBA: Yoshi's Island:

They perform identically as far as physics and control are concerned. Therefore, if you're all about gameplay, they're equal... the GBA gets bonus points for having some bloody hard bonus levels if you can pull off 100% in each world. (The SNES version has some extra stages, but the GBA has two more per world, if I remember right.)

Sound and visuals are better on the SNES, with the SNES color palette being far darker and with a greater level of contrast that I feel is superior to the GBA version. Naturally, Yoshi's sounds are also different.

I tend to prefer the GBA versions of the Mario games because of the added content.