From: knightoffire55 | #001 Because Microsoft doesn't have a portable game system.
If that is so I want Banjo-Kazooie ports.
They can, but only if MS allows them to. There have been a few instances where MS hasn't had issues with Rare making handheld titles for Nintendo, seeing as they don't make a handheld of their own. --- MH3 ID:JVQGY5 *PSN: NoJ87* 360 Gamertag: NoJ1987 *Others in Quote*
If MS allows them, sure they can (after all, the DS does have Viva Pinata.)...though, as far as I´m concerned, it won´t make any difference since Rare has been irrelevant ever since the N64 'died' (imo).