Crush the Castle is a physics and gravity based series of flash games developed by Armor Games - using the stone thrower (heavy catapult) to destroy the castles, which will make you think of the Angry Birds series (but with completely different style).

Tzar: The Burden of the Crown is a very classic real-time strategy game for PC. It's based on the fictional ancient history during the Middle Ages, developed and released by Haemimont Games company from Bulgaria in 2000. Although did not get great success, it has a considerable number of fans players and good public praise.