You want gaming? You want social networking? Technological convergence? Yes, I know it was out in 2005, but let's just revisit this (from wemakemoneynotart):
[Superstar] uses Japanese Puri Kura stickers ... The goal is to see and be seen, using tiny images woven into the fabric of Tokyo streetlife.
To play, place your own stickers (with a star on it to recognize participants) wherever you want and collect the stickers of other players by shooting them with your phonecam. Whenever a player snaps a Superstar sticker both players earn points.
I am a fan of these leetle stickers. But imagine the retro goodness if you combined this with the Gameboy camera and printer? Giddeon Reeling and others who make spaces fun and playful - get on to this!
Ahem, if anyone fancies doing it, here's a pdf outline of what they did.
