Map Quest is a map-based tool for creating virtual treasure hunts. The concept is simple: you create a series of clues that your students need to follow in order to identify places around the world. You can add as few or as many clues to your Map Quest as you like. When you’re ready to have students try your Quest, just give them the web address of the challenge or have them scan the QR code assigned to your Quest.
http://www.classtools.net/mapgame/game.php
http://www.classtools.net/mapgame/game.php