Immunity Protocol

Immunity Protocol is a neon pixel-art horde-survival auto-shooter set inside a collapsing biotech system. You control a combat sentinel through a hostile living machine: you steer through enemy pressure while your weapons fire automatically. Survival depends on positioning, choosing routes and building a loadout that can endure the collapse.

The biotech system

You move through bloodstream channels, corrupted circuitry, synaptic architecture and fiber-optic kill zones. The game has two deployment zones spanning four biome identities: bloodstream tissue, motherboard corridors, cerebral structures and fiber-optic lanes, each with different traversal and encounters. Swarms, elite enemies, roaming hazards and recurring boss breaches intensify the fighting, while environmental threats and biome-routed bosses change its tempo.

Build your sentinel

Each run begins with one of 10 playable sentinel chassis, each with its own weapon, passive identity and combat style. You can bring one of six symbiote companions for tanking, artillery, suppression, shielding, healing or utility. During a run, you draft weapons, passives, legends and run-only augments as conditions mutate under pressure.

Laboratory progression

Between deployments, you archive fragments, secure blueprints, unlock chassis upgrades, expand symbiosis options and earn permanent bonuses from achievements. The game includes 12 achievements with permanent bonuses.

Launch content

• 10 playable sentinel chassis
• 27 weapons
• 17 passive upgrades
• 6 symbiote companions
• 2 deployment zones across 4 biome identities
• 10 biome-routed bosses