Immunity

Immunity is a roguelite auto-shooter set inside the human body. You are a leukocyte - a white blood cell - and your mission is to protect tissue cells against waves of pathogens across a campaign of 7 infections.

Every pathogen behaves like its real-world counterpart. Salmonella hides inside cells. Staphylococcus attacks in clusters and releases toxins on death. HIV doesn't damage you directly - it weakens your immune system, making everything else deadlier. The biology isn't decoration - it's the gameplay.

Features

— 7-infection campaign from a common cold to septicemia 

— 14 distinct pathogens with mechanics grounded in real immunology 

— 7 weapons inspired by immune mechanisms (antibodies, complement cascade, phagocytosis, NETs…) 

— 7 unique bosses with multi-phase fights 

— Procedural mission generation — every run is different 

— Sandbox mode to test builds and farm upgrades 

— Double progression: campaign unlocks content, XP unlocks power 

— Fully procedural rendering — every visual is drawn in code, zero sprites 

— Fully synthesized audio — every sound is generated, zero audio files 

— French & English (option menu)

Early Access — Infections 1 & 2

This itch.io release includes the first two infections (ORL & Pneumonia) with full campaign, sandbox, and progression systems. More infections coming on Steam.

About

Made solo by a developer with a medical background in immunology. Designed so the biology teaches you the game, and the game teaches you the biology.

Built with Godot 4.6.