Apparently a lot of people have followed the white rabbit hawking Nintendo's new 3DS StreetPass games, because the four new titles have moved like gangbusters. Nintendo sold $4 million worth of Mii Force, Flower Town, Warrior's Way and Monster Manor in a month (at $5 each or $15 for all four) to players champing at the bit for more games using the interactive feature. To the uninitiated, you can pick up StreetPasses just by crossing paths with another 3DS player or even someone who's recently been in the same place through proxy passes. That lets you play games with their Miis (avatars), but until recently there were only a couple of preloaded titles that use the functionality. There must have been some pent-up demand, though, considering the sales numbers -- after all, the 3DS has been Nintendo's bread and butter lately. As a reminder about how it all works, check the video after the break.