Medieval Defense Z is an online action game. Set in medieval times, the lack plague has evolved into something horrible – now the dead are coming back to life and attacking the innocent! Using your tower, you must scour the land and destroy the undead. Your tower can be equipped with archers. These archers can be upgraded with the gold you earn. Upgrade their firepower, damage and speed. Furthermore, you can upgrade the donkey that pulls your tower, and your mighty king.