Besiege is a physics based building game in which you construct medieval siege engines and lay waste to immense fortresses and peaceful hamlets.
Build a machine which can crush windmills, wipe out battalions of brave soldiers and transport valuable resources, defending your creation against cannons, archers and whatever else the desperate enemies have at their disposal.
https://www.youtube.com/watch?v=xOm-qmmp7KU
https://www.youtube.com/watch?v=n-aG7E9gTNI
https://www.youtube.com/watch?v=yVsQoKTjpOA