Its a GPS treasure hunt game with a HANDHELD gps. I go every once and awhile and get the dog out of the house. Basically you go to http://www.geocaching.com/ and put in your zip and it will show you the geocaches close to your area. You put the coordinates on your GPS and go find it. The geocache typically consists of small pointless things (hot wheels cars/ happy meal toys) but its great if you have kids. I dont but I enjoy getting out and finding them and having the dog run around! Anyway, for those of you who do it, what do you think about it?