Loosely based on the 'six degrees of separation' theory you need to try and make up to six links between a random selection of commonly used words.
Thousands of possible game screens mean you'll never get bored.
On Google Play (android market) now
https://play.google.com/store/search?q=go6+game&c=apps
Tutorial on YouTube
http://www.youtube.com/watch?v=TtdBFyceldk