
Screenshots

Watch trailer on Steam ↗Osteomalacia
Yellow Screen · Published by Yellow Screen
Content notice: This Game may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore
Last updated 28 Sept 2026
Osteomalacia is a 2D top-down survival shooter set in a fog-covered city overrun by mutated beasts. Fight to escape by any means, upgrade your gear and skills, and uncover the story as you survive.
Navigate through Osteomalacia’s perilous cityscape, battling mutated foes and uncovering mysteries. Craft your survival strategy as you upgrade tools and abilities to escape the clutches of danger.
About this game
Osteomalacia is a top-down survival shooter set in a post-apocalyptic city. Your main goal is to find a way out of this nightmare, overrun by mutated people and animals.
An experimental bomb detonated above your city. Instead of burning it down, the explosion shrouded the streets in a thick black fog. You immediately notice the sudden disappearance of the Sun. Stepping outside, you witness every living thing around you mutated and transformed. It didn’t affect you—at least not yet. But soon, surviving will be all that matters.
Now, your only hope is to escape this land of abominations.
[First step]: Explore randomly generated streets of this city, enter as many buildings as you can, and find whatever left of it previous owners.
[Second step]: Escape location before the emission or consequences of your noise pollution and return home with all your loot.
[Third step]: Upgrade your equipment, salvage junk and Improve your skills from the newly earned experience.
[Fourth step]: Receive a radio signal? Wait, someone else is alive?
[Final step]: Escape...
Or not...
Huge thanks to Gloronic for cover artwork.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel Core 2 Duo 2.8Ghz or equivalent AMD family
- Memory: 4 GB RAM
- Graphics: GeForce 8800GT / ATI Radeon HD 4850
- DirectX: Version 9.0
- Storage: 100 MB available space
- Sound Card: DirectX 9 compatible
Supported Languages
Latest news
Patch NotesOfficial
small update
-fixed screen resolution switching-fixed time doesn't stop in dialogues-doors now more visibleNow I will focus on adding content (loot, guns, adding actual balance)Read full article on Community Announcements (bikbulatovaskar)Patch NotesOfficial
Untitled
Now game should be downloadable, now I'm going to sleepRead full article on Community Announcements (bikbulatovaskar)






