Siege Tower

Scaling the walls of the dark castle couldn't be easier than with the Siege Tower (aka, Siege Train). Roll it up and throw the planks across the walls and you're in! This design incorporated an interior (accesible through the swing away stairs) with 3 tiers, with arrow slits for archers to defend the incoming onslaught. Comes complete with high res wood textures. Those planks... they're geometry not transparency maps!