Everyday from 10AM-4PM until February 19th, Nintendo DS owners will gather on a tiny island off the coast of Tokyo to participate in the ultimate treasure hunt! Gamers only need register, show up, download the free Treasure Quest game and use it to locate items hidden throughout the island.
It's an awesome mix of real vs virtual worlds. Treasure Quest consists of puzzles you have to complete in order to receive clues. The game makes use of the DS's wireless capabilities to make check-ins and to obtain on-screen scenery matching real world environments. Considering every kid, mom, dad, granny, and dog has a DS in Japan, this treasure hunt could be massive.
via Pink Tentacle
Leave it to Nintendo to come up with something like this, fun and something everyone can enjoy.