Originally posted by: Darth Chaltab
Well, I've not played Yoshi's touch and go, since I've heard it was mostly a tech demo.
The biggest difference from what I've read is that YTAG is like old games such as Galaga in that there is no true end, it just keeps going and going and the only objective is the high score.
Kirby is more complex, and has a definite end, and a narrative, however shallow, more like Super Mario Brothers.
Yoshi T&G was a tech demo, used mostly to develop the DS, but it was so good they decided to make it into a game. It has nothing from the tech demo original code though.
I just wish Rare would break up from Microsoft's evil claws and go back for developing to Nintendo... DS would have much better games (and more games) if they did.