The Battle for Wesnoth is the most overrated game of all time. The only thing that has improved about the game in the past 15 years is the file size and hardware requirements. The AI is not good at all.
Dude.. it's the same game. It's a retro classic. Nobody is forking around with the AI or anything. I think there was a content pack added abut a decade ago, but that's it. This was the original "masterworks" RPG. It still is a masterpiece. Most people haven't heard of it because it was Linux only for most of its lifespan.