Don't let the creeps complete their path. Do that by building defense towers along the way. Manage and upgrade them to get to higher levels. You have 6 types of towers to choose from once you have enough gold.
A unique tower defense genre with role-playing elements and an isometric engine, along with more advanced tactical decision making, multiple maps and even the ability to play custom maps designed by other players.
You are the dungeon overlord and swarms of heroes are invading your lair, attempting to steal your gems. You must stop them by building creature lairs, traps, and sending your avatar out to defeat them.