Oath of Genesis describes how there once was a village named Midgar. In that time the people depended on the forest for food, water and wood supplies. Wolves and other animals also lived there. One day a wolf attacked the town. The wolves clan consisted of two leaders, but the people of Midgar were only able to defeat one. It is prophesied another man will arrive to take care of the other leader and after long time a man named Genesis comes to town. He ends up in the middle of the war.
Genesis gets to explore the environment with bright and cartoon-like graphics. It is played as an RPG where a custom character can be created at the start. Genesis needs to complete various quests and fight enemies in battles. While fighting the player can choose between semi-automatic or manual battles. Genesis gains experience, can level up and uses the collected currency to buy new items and weapons at shops.