The AI you play against here is scripted and not very advanced, as you say. Currently, the best part of this version, is multiplayer.
It's a pity you can't access the Steam version, because we are currently making skirmish AI for it. It will play with the same rules as the player. We're also adding new game modes. I'm not sure when and I can't make any promises, but we'll look into releasing the game on other platforms as here on itch.io.
Things to fight over is also a good suggestion, and something we plan to add as a content update to the Early Access version.