About This Game

Old Ninja: Underworld – Overview

🔍 Exploration

The 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.

⚔️ Combat

The ninja wields not only swords and shurikens, but also a variety of attack techniques. Use them wisely to challenge formidable enemies.

📈 Upgrades

Defeating monsters in the underground world grants experience points. Leveling up enhances your abilities. Power up and cut through the hordes of monsters.

👹 Monsters

Various monsters roam the underground world, seemingly originating from different realms. Defeat the final boss lurking deep within this chaotic domain.

🔥 Fast Travel

Campfires are scattered throughout the world. You can fast travel between them to explore the underground world more comfortably.

📖 Story

This game has no story—none at all.
It’s purely focused on exploration, combat, and upgrades. That’s what it does, and it does it well.

Note: Xbox controllers are supported, but some actions—such as settings and fast travel—may require mouse input. Thank you for your understanding.

Note: Key configuration is available, but please note that some display elements may not appear correctly. We appreciate your understanding.

Note: To ensure a comfortable experience with the full version, we recommend trying the demo first. Please check the system compatibility and gameplay feel before making your purchase.

Streaming Guidelines

• Include the store page URL in the video description.

• Include the title “Old Ninja: Underworld” in the video title.

As long as these conditions are met, you are free to stream or create videos using this game.
Monetization is allowed.

──────────────────────────────

Estimated completion time: 1h~2h

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generating background images for the store page's cover, header, and banner
Trailer and in-game BGM generation
Creating the English version of the title logo
Translation into other languages