Secret Mermaid 4 is a story-driven action RPG game. The game takes place in the underwater world and has a unique and fun story that you can experience with cute characters. The storyline of the game is full of twists and turns, so you will never get bored of the story. You will need to make decisions in order to save your mermaid life.

You will need to complete quests in order to get new skills, weapons, and armor. You will be able to upgrade your weapons and armor to become more powerful. You will need to explore the underwater world in order to find new species, so you can hunt them. You will also need to find a way to save your mermaid life, so you can continue your adventure in the underwater world.

The underwater world is full of cute characters. You will be able to interact with them and enjoy the storyline.