Announcement
Update on September 24, 2025
We’ve revised some of the tutorial text and parts of the map.
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Old Ninja : UnderWorld
Also known as Old Ninja : UnderWorld, old ninja underworld, old-ninja-underworld
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.
Last update
21 May 2026
Latest update
Update history
Browse past updates and patch notes for this game.
4 updates
September 2025
- 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!
- 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 fo…
- Announcement of Release Dates for the Full Version and DemoOfficial 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. WaterfallStudio
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