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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.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Try this game before buying.
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
Right now the cheapest offer for Old Ninja : UnderWorld is CA$3.89 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Old Ninja : UnderWorld is CA$3.89 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Old Ninja : UnderWorld drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
