Deep Dungeon (ディープダンジョン) is a series of role-playing video games developed by HummingBirdSoft.

The game was released exclusively in Japan, but on April 15, 2006, Deep Dungeon was unofficially translated into English.

One day, monsters raided the town, stealing both the treasures and Princess Etna's soul.

All other games will force the player to re-enter maps to collect respawning chests for money or items (for resale) if they want to gold farm.

This game also reverts to the standard practice or randomizing characters' stat growth when gaining an experience level.

New to this engine is that the player can eventually learn to summon two monsters to function as a temporary additional party member for a single battle.

It also removed the feature that stops random battles when the player is significantly more powerful than the enemies.

These are optional tasks that will reward the player with bonus items, experience or money when finished.