Mountain and Sea Raiders is a puzzle, monster-fighting and level-clearing game that combines time-travel wuxia elements with those from The Classic of Mountains and Seas. It tells the adventure story of a righteous young man from the modern era who, while being bullied along with his classmates, accidentally falls into an ancient well, activates a time portal, and travels back to ancient times.​

After the time travel, the protagonist gains mysterious spiritual power and gradually improves his martial arts through continuous practice. However, he encounters various exotic monsters from The Classic of Mountains and Seas in the ancient world. Players will control this character to step into the chaotic time and space. The core gameplay revolves around "growth + level-clearing": defeat monsters to upgrade the character's attributes, and each level-up expands health points, spiritual power and martial arts value; at the same time, collect food, gold coins and scrolls in the scene, which are used to increase health points, mental strength and basic strength respectively, comprehensively enhancing combat effectiveness.​

A more distinctive feature is that the protagonist's weapon will automatically grow with his own abilities, and can also be proactively upgraded through exclusive items to unlock more powerful attack effects. In the process of solving the mechanism puzzles in ancient secret realms and defeating exotic monsters, players will gradually explore the mysteries of time and space, and finally achieve the core goal of "traveling between the modern era and ancient times", continuing the righteous adventure in the interweaving of the two time and space.​

• You can control a character into a time of delirium, you can fight monsters to upgrade the character attributes, upgrade can expand health, soul power, force.

• Pick up food, gold, and scrolls to level up and increase health, spiritual strength, and strength.

• Weapons automatically grow with your abilities, and weapons can also be upgraded.

• Through constant exploration, you finally unravel the mysteries of time and space, and can travel between modern and ancient times.