I am a big fan of Pathery ( http://www.pathery.com/ http://www.pathery.com/ ) - based on the K most vital node problem : https://cstheory.stackexchange.com/ques

I am a big fan of Pathery ( http://www.pathery.com/ http://www.pathery.com/ ) - based on the K most vital node problem : https://cstheory.stackexchange.com/questions/11375/generating-a-tower-defense-maze-aka-finding-the-k-most-vital-nodes-nodewise-i https://cstheory.stackexchange.com/questions/11375/generatin...