Demo

Old Ninja:UnderWorld Demo

Released Sep 14, 2025by WaterfallStudioNo user reviews(Steam reviews)

This is the demo version of Old Ninja: Underworld. This game is a 2D pixel-art Metroidvania action game where an aging ninja explores a chaotic underground world. Battle through a bizarre mix of enemies with no apparent connection, strengthen your ninja, and challenge the boss lurking deep below.

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About Old Ninja:UnderWorld Demo

Old Ninja: Underworld Demo – 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 the display may not appear correctly. We appreciate your understanding.

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.

Game details

Game details

Released
Platforms
Steam rating
No user reviews

Age ratings

IGRS 18DEJUS 14STEAM_GERMANY 16

Game modes

Languages

System requirements

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 11 64-bit
  • Processor: Quad-core Intel or AMD processor (2.5 GHz or higher)
  • Memory: 8 MB RAM
  • Graphics: NVIDIA GeForce GTX 770 or AMD Radeon RX 470 or higher
  • Storage: 1 GB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows11 64-bit
  • Processor: AMD Ryzen 7 2700X, Intel Core i7-8700K or higher
  • Memory: 32 MB RAM
  • Graphics: NVIDIA GeForce RTX 3070 or AMD Radeon RX 6800 or higher
  • Storage: 1 GB available space