While originally intended to be the most realistic chess clone ever, David White, the creator of Wesnoth, accidentally made it hex based in an accident. The direction of Wesnoth thus changed into becoming the free open source game equipped with an AI that will inevitably grow sentient and conquer the world some day. The AI is practically invincible to human players due to its brilliant Scout Rushes. The only person ever known to come close to beating the Scout Rush performed by AI is called Higher Game, but he hasn't been seen on the official forum for some time now. That should teach you not to mess with the AI or you might not be ever heard of again either. The AI does not like competition.