About the Game 

Underworld is a 2D pixel-art action-adventure platformer set in a haunting sci-fi realm deep beneath the surface. You play as a nano-enhanced swordsman, awakened by a mysterious AI after being left for dead in the ruins of a forgotten world. With your body rebuilt and your mind linked to advanced technology, you're the last hope to stop the growing corruption spreading through the depths. Explore a nonlinear world filled with dangerous creatures, hidden secrets, and lost souls. Every step forward requires precision, courage, and a sharp blade. Inspired by Metroidvania exploration and Souls-like combat, Underworld challenges you to think, adapt, and survive in a beautifully decayed futuristic landscape. 


Features

  โš”๏ธ Precision Combat โ€“ Engage in intense melee battles where timing, spacing, and stamina management are key to survival.

  ๐ŸŒŒ Sci-Fi Metroidvania World โ€“ Unlock new paths with abilities, upgrades, and relics as you traverse a sprawling underworld network.

  ๐Ÿง  AI-Guided Narrative โ€“ Discover a dark, layered story through your AI companion as you uncover the truth of who you are—and what you've become.

  ๐Ÿ‘๏ธ Pixel Art Atmosphere โ€“ Explore a visually striking 2D world with hand-crafted environments, dynamic lighting, and eerie sci-fi vibes.

  ๐Ÿ’€ Souls & Upgrades โ€“ Absorb fallen souls to enhance your abilities, unlock skills, and customize your fighting style.

 ๐ŸŽฎ Singleplayer Experience โ€“ No distractions, no hand-holding—just you, your sword, and the horrors of the underworld.


© 2026 Nitrous Studio — All rights reserved 


Published 1 day ago
StatusReleased
PlatformsHTML5, Windows
Release date 2 days ago
AuthorsNitrous Studio, TheKaiser-design
GenrePlatformer, Adventure
Made withUnity
Tags2D, Metroidvania, Pixel Art, Souls-like
Average sessionAbout an hour
LanguagesEnglish
InputsKeyboard, Mouse
LinksBlog

Download

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Underworld.zip 175 MB

Development log

Comments

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This is for sure a great game! i enjoyed playing a lot. The graphic is great and the use of a comic book opening is original. However i do have some feedback if you don't mind.

  • The player is too low on screen and the camera following when falling should be faster. 
  • There is some screen size issues with menues and text. Since this is unity i suggest scale by screen size and then make the canvases scale by pixel 1920x1080. This fixes it for me everytime.
  • Attacks feels slow because they aren't loopable, I feel like we should be able to go from the second attack back to the first.

Besides this, fantastic work!