The Valess: Oil and Grit mobile game is a fantasy-themed action RPG. Players will take control of a humble oil drifter named Valess in his journey to discover the world of armed golems and the leader of a criminal organization who has a bounty on his head. The game begins with Valess getting a strange message from an unknown source, which leads him to meet with the leader of a criminal organization, Lock. It is then that he is given his first instructions and is given the opportunity to join the criminal organization.

As he begins his journey with Lock, he will have to face numerous enemies and obstacles. He will also be able to gain the help of other golem companions.

In the game, players will be able to get a variety of weapons and equipment that will help them survive and thrive in the world of armed golems.