First off, it's important to note that there will be two different single-player campaigns in Stronghold 2. There's the path of war, which plays out like the single-player campaigns from the earlier games. In the path of war, you must battle it out against your opponents, defending your castle and then laying siege to your enemies' castles in return. Then there's the path of peace, which is an economic campaign with a storyline. Instead of having to constantly worry about attack, you can focus on building up a medieval economy. There will also be a free build mode, which is a sort of sandbox mode that lets you build up an economy completely independent of outside forces