Etrian Odyssey III: The Drowned City is an Adventure, RPG, Single-player, and Multiplayer video game developed by Atlus. Throughout the gameplay, the player assumes the role of a guild commander where the main mission is to explore the labyrinth to complete the quests. The player has to make his guild characters from a large collection of available classes.

Every class has a unique range of strengths and weaknesses where the player can upgrade them as he gets to advance. The player can add up to thirty members in the guild and can switch them in town as well. The adventures of the player bend upon the player in hand provisions, which permits him to advance to only that provinces.

The player can unlock the sea quests as he approaches the foreign ports where the player can get rid of the monsters of certain specifications. The game also offers the player a Forging option, which permits the player to add an effect in the weapon of his desired choice.