Ninneko is a role-playing game based on the concept of pets, where players can grow and nurture their own pets and earn through PvP/PvE battles and story events. Each unique creature is made up of a unique combination of hair, ears, tail, eyes, hand, and mouth. The cattributes are determined by their genetic code.

Ninneko village is made up of 5 classes: warrior, support, mage, ranger, and assassin. In order to strengthen your village and to win the battle, players can utilize their skills and abilities, which they will train in their village.

Trainings are made up of various elements that boost players' combat abilities and are used as a weapon, shield, and armor. Each type of elements has different effects and skills. Players will gain experience through PvP/PvE battles and through story events.

In addition, players can interact with NPCs, get jobs, and participate in events. Through those, players can learn more about the world and earn money.