Tower of Doom is a side scrolling beat 'em up with some RPG elements mixed in. Notable bosses include a troll that regenerates unless burned, a large black dragon, the dreaded Shadow Elf (Mystara's equivalent of the drow), a beholder, the optional superboss Flamewing (a great wyrm red dragon) and the final boss Deimos (an archlich).
The gameplay is more technical than the average on beat'em up games. In addition to the usual basic attacks and jumping it includes blocking, strong attacks, turning attacks, dashing attacks, crouching and evading. It also requires the use of careful tactics, as most enemies have the same abilities as the heroes and can outreach them, too.
As important as melee combat is ranged combat and the use of spells. Daggers, hammers, arrows and burning oils can be used as throwing weapons, and many enemies have similar weapons. Spells can be used by means of magical rings or by the two playable spellcasters (a cleric and an elf).
Source: Wikipedia, Dungeons %26 Dragons: Tower of Doom , available under the CC-BY-SA License.