Pathogenic Demo Launches Today on Steam

Think the Binding of Isaac meets Spore in this new game from the composer of Brotato

October 31, 2025 – The demo for Pathogenic, a new evolution-based roguelike from two-man team Aberrant Labs and publisher Slug Disco, is available today (October 31st) on Steam. The demo will go live at 2pm UTC and gives players their first hands-on look at the game’s unique mix of biological combat and procedural progression.


Described as The Binding of Isaac meets Spore, Pathogenic puts players in control of a single parasite waging war against the human immune system. Players hunt enemy cells, absorb their organelles, and graft them onto their own body to evolve new abilities and forms. Every run offers new combinations and strategies as players adapt to survive an ever-escalating internal ecosystem.


The game features soft-body physics for a tactile, organic feel, alongside a roster of enemies inspired by real microbiology. From macrophages and T cells to rival parasites and large-scale organ bosses. Players will explore the body’s inner biomes, including the lungs, heart, and brain, each with its own enemies and hazards.


Key Info

 

• Demo release date: October 31 (live at 2pm UTC)
• Steam page: https://store.steampowered.com/app/3808690/Pathogenic/
• Developer: Aberrant Labs (fun fact, the lead developer is the composer of the Brotato soundtrack)
• Publisher: Slug Disco

Previous Coverage

 

• Official Demo Release Trailer on IGN GameTrailers
• Coverage from Drae
• Coverage from Blitz

Pathogenic is currently in development for PC. The demo is available now on Steam.