You must manage Gold for building/upgrading towers and Mana for casting powerful spells like meteors or transforming enemies into chickens.

Unlike the original, you can now earn a "Brilliant" (3-star) rating even if heroes touch or move your gems, provided all three gems remain on the field at the end of the mission.

The total number of gems per level has been reduced from five to three.

The Ultimate Edition expands on the original with several major changes and additions:

You build three primary tower types: Orc Dens (physical damage/archery), Undead Crypts (fear and crowd control), and Demon Temples (fire and high damage).

Includes three brand-new, hand-crafted levels not found in the original version.

Features auto-collection for mana bottles and easier item pick-up by hovering the mouse over coins and bottles. Gameplay Mechanics

Players now earn experience points even when losing a level, which helps reduce the need for grinding earlier stages.