The Great Siege is a free online flash game of the category strategy games.

Friends and comrades, my brothers! The Dark Lord has sent his minions upon our city to end the last surviving bonds of humanity. We cannot let our city fall into the wrath of darkness and watch our home fade into another shadow of abyss. Brothers of humanity! Let’s load up our cannons, fire up our catapult, and let us march through the gates and send those filthy devils besieging our home back to where they belong!!

Fire Catapult:
* Mouse: Click-and-Drag at the head of Catapult to adjust target, release mouse to fire.
* Keyboard: Use arrow keys UP + DOWN to adjust catapult target, SPACE BAR to fire.
Dig a Trap (Foot Soldier only Ability).
Click on the Foot Soldier in order to make it digging a trap. The trap will take a while to finish, so make sure you have people cover up for him.
Tank Regular/Tower form
Click on the Tank to transform it into a Tower.
Click on it again to turn it back to Regular form.
Resources Conversion:
In the Market, you can convert your Bonus Points into different resources.
Upgrade and Level-Up
Most buildings and weapons in this game can be upgraded. Foot Soldier and Elite Guard can also be leveled up to become stronger units.
Hot Keys:
City Mode:
[M] Market
[B] Building
Battle Mode
Army
Army Panel
[D] Command Army panel.