Many games and their multiple modification versions covering the Three Kingdoms period have been released so far. Unfortunately, the mods based on the "Total War" series lack Chinese specificity concerning siege warfare. Battering rams, siege engines and ladders are the defaults tools for Romans and latter Western medieval battlefields, but as correctly modeled in the vintage game series "Three Kingdoms: Fate of the Dragon" and "Dragon Throne: Battle of Red Cliffs", serious players would like to use "Kongming Wagon" tethered reconnaissance manned hot air balloon, "Malefic Kite" two seater manned propelled gliders used to assault ramparts, and obviously "Thunder Wagon " trebuchets (better than the anachronic old Western torsion catapults).
Otherwise, laying siege looks like a "deja vu".
Link to some of these units: http://www.strategyfirst.com/app/web...agonThrone.pdf