SudoFeud is point scoring game that you must play against an opponent.
It’s very difficult to describe. I recommend that you watch this video: http://www.sudofeud.com/
In short, SudoFeud works a bit like Scrabble. Especially with double & triple scoring points.
I have not play tested this. Sorry, I’m just too busy. Also, I need to play against a ‘friend’. Which I have none of! That’s what happens when you spend your whole existence play testing puzzle apps for a blog that nobody reads. Actually, my blog just got its 200,000th hit.
Roel Griffioen is the author of SudoFeud. He also made a great puzzle app called Jump! about 2 years ago.