Pathogenic puts players inside the human body as an evolving cellular parasite

Pathogenic is a roguelike twin-stick shooter where players control a parasitic cell evolving through organelle grafting while battling the host immune system.

Cellular Combat and Organelle Grafting

• Players pilot a lone microscopic pathogen fighting against the host immune system in twin-stick combat.
• Defeating enemy cells yields organelles that can be harvested and grafted directly onto the player cell.
• Organelle parts include flagella for movement, mitochondria for energy, secretors for ranged projectiles, and defensive spikes.
• Combining varied organelle chains allows players to create distinct mutant builds for every run.

Host Immune Defenses and Boss Encounters

• Host defenses deploy diverse adversaries ranging from macrophages and T cells to rival parasites like protozoa and tapeworms.
• Formidable boss organisms guard vital organic chambers deep within host organs.
• Combat demands constant tactical adaptation as enemy cells swarm through procedural chambers.
• A soft-body physics engine drives organic movement for floating cells, tentacles, and fluid projectiles.

Procedural Anatomy Biomes

• Runs proceed through distinct anatomical zones including the branching lungs, the beating heart, and the brain neural network.
• Each internal biome features procedural room layouts and unique organic environmental hazards.
• Procedurally generated paths ensure shifting obstacles and enemy placements across successive runs.
• Navigating the bloodstream requires balancing evasion against dangerous clusters of defending white blood cells.

Plasmid Tree Metaprogression

• Gathering plasmid fragments during expeditions unlocks permanent upgrades on the metaprogression tree.
• Each parasite species features a dedicated plasmid tree to support diverse playstyles.
• Permanent node investments provide structural enhancements that persist after a cell expires.
• Upgraded traits help the organism endure deeper invasions into vital organ systems.