IN Mondealy: Day One the player will play the role of a city guy living in a small town, but every day he reveals the secrets of a surreal kingdom in the dungeon. The kingdom is right under his feet. In the world of Mondealy, the main character improves relationships with unusual inhabitants and explores the environment, reaching the dangers and mysteries that fill the state.

In the new world there are two types of characters: aboveground and underground. The user can interact with them to obtain information and learn about everything that surrounds him. The main character fulfills the requests of residents and helps them for a reward or interesting information. The gamer will have to explore both dimensions with different dungeons, castles, hometown and personal homes of several characters. However, not every area is equally ordinary.

Side quests and a main storyline are presented, telling about the laws and features of the underground world with different inhabitants. In addition, there may be additional events and stories along the journey if the user wishes to explore it. The gallery includes unlocked characters and lets you learn how they were created and what backstory they have. Once Michael discovered the secret paths, he met a local royal who needed help. The main character is able to change the future fate of the kingdom.