Old Ninja: Underworld – Overview ExplorationThe underground world is a labyrinth, much like an ant nest. Some paths may be inaccessible at first. In such cases, explore thoroughly and search for upgrade items. These items will guide the ninja to new areas.⚔️ CombatThe ninja wields not only swords and shurikens, but also a variety of attack techniques. Use them wisely to challenge formidable enemies. UpgradesDefeating monsters in the underground world grants experience points. Leveling up enhances your abilities. Power up and cut through the hordes of monsters. MonstersVarious monsters roam the underground world, seemingly originating from different realms. Defeat the final boss lurking deep within this chaotic domain. Fast TravelCampfires are scattered throughout the world. You can fast travel between them to explore the underground world more comfortably. StoryThis game has no story—none at