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. 

If you have any thoughts while playing, feel free to leave a comment, weโ€™d love to hear from you. And if you enjoyed the game, a positive review goes a long way. It helps us a lot.

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 components as you traverse a sprawling underworld network.

  ๐Ÿง  AI-Guided Narrative โ€“ Discover a dark, layered story through your AI companion (VIS) 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 and customize your abilities, unlock skills.

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


โŒจ๏ธ Controls 

Category Action Key / Input
Movement Move Left / Right A / D
Jump Space
Dash C
Combat Attack V
Abilities Dark Dash 2
Reaper Attack 3
Glitch Attack F
Interaction Interact E
Travel Enter
Items Use Potion 1
System Menu Esc
Mouse Primary / Next Left Click
Scroll Up / Down Mouse Wheel



You can play from browser : just make sure you have Hardware Accelerated turned on in your Setting -> System on Chrome. 



© 2026 Nitrous Studio — All rights reserved 
Updated 10 days ago
StatusReleased
PlatformsHTML5
Release date 61 days ago
AuthorsNitrous Studio, TheKaiser-design
GenrePlatformer, Adventure
Made withUnity
Tags2D, Metroidvania, Pixel Art, Souls-like
Average sessionAbout an hour
LanguagesEnglish
InputsKeyboard, Mouse
LinksBlog

Development log

Comments

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GREAT WORK! LOVE THE STORY LINE COMIC BOOK OPENING, THE GAME TOOK ME BACK TO 2000'S NOSTALGIC TRIP!! KEEP UP THE WORK

Thanks!! I`m glad you liked it :D

obsessed, this is one of those games you get lost in for hours!

Thanks for the feedback!!

Voy a darle una oportunidad, es interesante.


Thank you, I hope you give it a try!

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!

(1 edit)

Thank you for your comment and your kind words! The feedback is really appreciated, we'll keep it in mind.