I don't understand why you even brought up XNA. There's no reason to shell out $500.00 for five years of unfinished indie games. Besides, Xbox Live Arcade houses a few good games with local multiplayer, many of which are not published by large companies. I don't think you even need a Gold (paid) Live membership to buy them, either.
I'm no hardware expert, but I don't think the Wii uses any cameras, only infrared sensors. You can even use well-placed candles instead of the sensor bar and it works just fine.
I don't understand why you even brought up XNA. There's no reason to shell out $500.00 for five years of unfinished indie games. Besides, Xbox Live Arcade houses a few good games with local multiplayer, many of which are not published by large companies. I don't think you even need a Gold (paid) Live membership to buy them, either.
I'm no hardware expert, but I don't think the Wii uses any cameras, only infrared sensors. You can even use well-placed candles instead of the sensor bar and it works just fine.