
Screenshots

Watch trailer on Steam ↗Old Ninja : UnderWorld
Waterfall Studio · Published by Waterfall Studio
2 user reviews — 0% positive (2 reviews)
Last updated 28 Sept 2026
Old Ninja: Underworld 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.
£2.49
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Action, Adventure, Indie · 2025 · More under £5 games
Explore the twisted depths of Old Ninja: UnderWorld as you guide an experienced ninja through pixel-art challenges. Strengthen your skills and face off against formidable bosses in this 2025 indie action-adventure.
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.
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Estimated completion time: 1h~2h
System Requirements
Will my PC run this? →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
- DirectX: Version 11
- Storage: 1 GB available space
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
- DirectX: Version 12
- Storage: 1 GB available space
Supported Languages
Latest news
Patch NotesOfficial
Update on September 24, 2025
We’ve revised some of the tutorial text and parts of the map.Read full article on Community Announcements (Waterfall Studio)AnnouncementsOfficial
It's officially out!
Old Ninja:Underworld has been officially released! To celebrate the launch, we're running a special sale until the 27th—be sure to check it out!Read full article on Community Announcements (Waterfall Studio)AnnouncementsOfficial
Demo Now Available!
The demo version of Old Ninja: Underworld is now available!To ensure the best experience with the full version, we recommend trying out the demo first.Please use it to check your system compatibility and get a feel for the gameplay.Read full article on Community Announcements (Waterfall Studio)AnnouncementsOfficial
Announcement of Release Dates for the Full Version and Demo
Official Announcement of Full and Demo Release Dates!The demo will be available on the 15th, and the full version will be released on the 20th.WaterfallStudioRead full article on Community Announcements (Waterfall Studio)






