[Pxtl]

If you want to add a little RPG-ish "upgrading" to the game, I recommend the "Cities and Knights" expansion. It adds a lot of complexity to the game but adds some fun "level up" mechanics and a bit more conflict and brutality to the game.

[AdrianRossouw]

I remember reading that the game was originally designed to be cities and knight, but was simplified for it's initial release.

It took us a while to work up to cities and knights, but I really have trouble playing the vanilla game anymore.