Immunity Protocol

Immunity Protocol is a neon pixel-art horde-survival auto-shooter set inside a collapsing biotech system.

Deploy a combat sentinel into a living machine gone hostile. Drift through bloodstream channels, corrupted circuitry, synaptic architecture, and fiber-optic kill zones while swarms, elites, roaming hazards, and recurring boss breaches keep tightening the screen around you. You move. Your arsenal fires automatically. Survival depends on positioning, routing, and building something strong enough to outlast the collapse.

Core Features

• Manual movement, automatic fireSteer through dense enemy pressure while your build handles the shooting.

• 10 playable sentinel chassisStart each run with a distinct weapon, passive identity, and combat style.

• 6 symbiote companionsBring a support organism into battle for tanking, artillery, suppression, shielding, healing, or utility.

• Build-driven survival runsDraft weapons, passives, legends, and run-only augments as the run mutates under pressure.

• 2 deployment zones, 4 biome identitiesFight across bloodstream tissue, motherboard corridors, cerebral structures, and fiber-optic lanes with different traversal and encounter reads.

• Recurring bosses and live hazardsSurvive elite spikes, roaming environmental threats, and biome-routed boss encounters that keep changing the tempo of the run.

• Persistent laboratory progressionArchive fragments, secure blueprints, unlock chassis upgrades, expand symbiosis options, and earn achievement bonuses between deployments.