Nintendo served up a collection of new StreetPass games for the Nintendo 3DSearlier this month, offering players new opportunities to exploit their 3DS-owning friends to earn new Mii hats and outfits. Like the existing StreetPass games, they're lightweight diversions that you'll either ignore after a few plays or delve into obsessively.

You can count me among the obsessed. I've unlocked every Mii hat available through Find Mii, and I've completed Find Mii II's secret quest multiple times -- the Famicom hat I earned afterward was totally worth it. Despite their simplicity, Nintendo's StreetPass games have a undeniable charm that can keep you hooked for months.

Unlike the StreetPass games that are bundled with the system, however, these new games aren't free. After putting a few dozen unsuspecting Mii Plaza visitors through the new StreetPass offerings over the last several days, I found that some games were more enjoyable and worthwhile than others.

[Mii Force, Flower Town, Warrior's Way, and Monster Manor are priced at $4.99 each. All four can be purchased as a bundle for $14.99.]