Twenty of the titles (including Pong, Space Duel, and Outlaw) will have single-card multiplayer for up to four, which makes sense given how little data would need to be transmitted to send the whole game ROM out over wireless. Check out the full game list and a trailer after the break. Something tells us that the footage in the trailer isn't authentic DS gameplay. Something like the fact that the screen images are wider than actual DS screens and aligned incorrectly.
This is great news for retro gaming enthusiasts -- except for the ones releasing Intellivision Lives!, who we imagine didn't expect to be competing with the 2600 again.