Pathogenic

Pathogenic is a 2D twin-stick shooter in which you play as a lone parasite fighting the human body’s immune system. Hunt enemy cells, take their organelles and graft them onto your body to evolve and infect your host. Each run takes place in a procedurally generated version of the body.

Build your parasite

Assemble your parasite from dozens of organelles, combining their abilities to create different builds. Flagella provide movement, mitochondria provide power, secretors enable ranged attacks and spikes support melee combat. Chain organelle effects to discover synergies.

Fight the immune system

Battle immune cells such as macrophages and T cells, as well as rival parasites including tapeworms and protozoa. Bosses lurk deep within the host’s organs.

Explore the body

Travel through distinct biomes, including the branching pathways of the lungs, the chambers of the heart and the neural network of the brain. The world combines hand-crafted design with procedural generation, so each run offers a different experience.

Upgrade between runs

Collect plasmid fragments to permanently upgrade your parasite’s plasmid tree between runs. Each parasite has its own upgrade tree, allowing for a range of builds.

Organic physics

A soft-body physics simulation shapes how cells, enemies and projectiles move and feel.