Deadly Towers is an action role-playing game co-developed by Lenar and Tamtex for Irem as a software title for the Nintendo Entertainment System (NES).

It is a pun of the word mashō (魔性), meaning "devilishness", and in keeping with this theme, the Japanese cartridge contained a red LED at the top which illuminated when turned on.

Khan doesn't identify himself, but he greets Prince Myer by name, and informs him that Rubas, the "Devil of Darkness", is preparing to overtake Willner Kingdom by using seven magic bells capable of summoning an army of monsters.

The main palace contains one long, horizontally scrolling room with the sacred flame and the entrances to 7 bell towers.

Deadly Towers was the work of Japanese video game developers Lenar and Tamtex, the latter being owned by the same company as Irem.

On Lenar's side, the game was co-designed by a former employee from Namco (Junichi Mizutari), where he worked on the similar The Tower of Druaga.

Alan Weiss, the Nintendo Producer at Broderbund, managed all product development and worked with Lenar to translate the text of the game.

[5] At the outset of the game, Prince Myer is comparatively weak: he can throw only one sword at a time, and some enemies take eight or more hits to defeat.

[6] Deadly Towers was the best-selling title among Broderbund's four initial NES games and as a result it enjoyed a longer production cycle from the publisher than its contemporaries.