Its a kind of adventure game. You play around on outside. You just need Symbian S60 Phone or Windows Mobile Phone with internal or external GPS and GPRS or 3G data connection. You can create a mission and play with your friends. The game is free execpt the connection cost.
Download from gpsmission.com and start for play and having fun with your friends.
You can design your own outside treasure hunts and your friends or anyone can play them with a GPS mobile phone.