I play Tetris DS online sometimes. Its good fun but it is very addictive so watch out for the old RSI. Also there seem to be a lot of really fast and ruthless players out there so I would only recommend it if you're reasonably good at Tetris already.
As for chatting, it might be worth mentioning that the pre-game menu screen in Metroid Prime Hunters actually lets you talk to your opponent via the microphone. I can't remember whether it lets you do that indefinitely though. Plus its one way at a time (like a walkie-talkie) so its not quite as good as a phone.
As for chatting, it might be worth mentioning that the pre-game menu screen in Metroid Prime Hunters actually lets you talk to your opponent via the microphone. I can't remember whether it lets you do that indefinitely though. Plus its one way at a time (like a walkie-talkie) so its not quite as good as a phone.