The Tower is a mod for Spear of Destiny, made by Poet. It was released on January 15, 2002.
The mod features 21 levels, most of which showcase Poet's intricate and puzzle-based level design, peppered with such features as artifacts that harm or kill the player, new weapons (such as the missile launcher), teleport items and exploding barrels.
An SDL port was released on December 9, 2012 which enhanced some features.