The Exo-Gems of Merb!

Merb,  most solemn of all Exo-Varks, has entrusted you stewardship over his sacred and powerful Exo-Gems. But on the Fields of Pothar, power draws the thirst of vampiric parasites like moths to a flame. Can you defend all 30 Exo-Gem Citadels, and will you survive the onslaught of the POWER SUCKERS?