Survive an endless undead horde in this brutal auto-battling roguelike. Slash, upgrade, and evolve your arsenal as chaos unfolds to the pulse of an industrial metal soundtrack. Contagion Protocol is fast, bloody, and built for replayability.

Sign in to add this item to your wishlist, follow it, or mark it as ignored

This game is not yet available on Steam

Planned Release Date: Q4 2026

Interested?
Add to your wishlist and get notified when it becomes available.
Add to your wishlist
 

About This Game

Contagion Protocol is a brutal, stylish bullet-hell roguelike where survival is never guaranteed and the infected never stop coming.

The world has fallen to the contagion. Civilization is gone. You’re what’s left - a lone survivor cutting through endless undead swarms in a fight that never truly ends.

A Bullet Hell in the End Times

Mow down waves of the infected with an arsenal that grows as fast as the horde.
Start with a single survivor and basic gear. Fight, evolve, and adapt - then extract or lose everything. Every run is a desperate sprint between carnage, upgrades, and the looming chance of failure.

Extraction Survival

Survive long enough to face the final boss.
Defeat it, and one of several extraction points activates. Reach it before time runs out and hold your ground for two relentless minutes to escape alive.
Only a successful extraction earns you Contagion Credits, used to unlock powerful permanent upgrades back at the Safehouse.

The Safehouse

Your base between runs - the only place untouched by the plague.
Spend earned credits to unlock passive and active upgrades: ricochet bullets, explosive ammo, extra companions, or new character abilities.
Every survivor can be rebuilt and specialized - but if a character dies in the field before extraction, they’re gone until rediscovered, stripped of their progress.

Weapons and Chaos

Experiment with dozens of evolving weapons and brutal passives:

  • Cleavers, rotating blades, boomerang axes, reverse shotguns, radial bursts, and more.

  • Stack upgrades for speed, damage, armor, regeneration, and bleed effects.

  • Watch chaos unfold as blades orbit, bullets explode, and the screen fills with blood and motion trails.

The Infected Horde

Every run pits you against an ever-growing swarm:

  • Over fifteen zombie types: runners, tanks, soldiers, acid spitters, healers, and summoners.

  • Enemies evolve and grow stronger the longer you survive.

  • No waves, no downtime - just constant escalation until extraction or death.

Maps and Settings

Explore vast, open environments ranging from rural Americana wastelands to crumbling cities.
Each map offers unique pacing, hazards, and spawn patterns that demand new strategies.

Developer

Contagion Protocol is developed solo by an active-duty military member - built during off-hours, late nights, and early mornings.
It’s a passion project designed for players who crave raw, replayable destruction and unrelenting combat.

Features

  • Endless enemy spawns - dynamic, escalating chaos.

  • Dozens of melee and ranged evolutions with deep upgrade synergy.

  • Permanent progression via Safehouse unlocks.

  • Four survivors at launch, each with unique playstyles.

  • Industrial metal soundtrack driving every gory encounter.

  • Massive replayability - every run ends in destruction or extraction.

If you thrive on pure action and games like Vampire Survivors, 20 Minutes Till Dawn, and Rogue: Genesia, this is your next obsession - until the horde gets you.

Ongoing Development

Contagion Protocol is a continuous, community-driven project.
Player feedback from demos and early builds will directly shape new content, balance updates, and features.
The goal is simple: keep improving, expanding, and refining - no abandonware, no empty promises, just steady progress fueled by the players who join the fight.

Mature Content Description

The developers describe the content like this:

This game contains pixelated violence, depictions of blood and gore, and combat against undead enemies.
The overall tone is dark and survival-focused, with themes of post-apocalyptic environments and intense action.
While stylized and non-photorealistic, player discretion is advised due to the intensity of enemy swarms and blood effects.

System Requirements

    Minimum:
    • OS *: Windows 7 SP1+ or Windows 10
    • Processor: Intel Core i3 (2.4 GHz) or equivalent
    • Memory: 2048 MB RAM
    • Graphics: Integrated graphics (Intel HD 4000 or better)
    • DirectX: Version 10
    • Storage: 500 MB available space
    • Sound Card: Any
    Recommended:
    • OS: Windows 10 or later
    • Processor: Intel Core i5 (or better)
    • Memory: 4096 MB RAM
    • Graphics: Dedicated GPU (NVIDIA GTX 750 or better)
    • DirectX: Version 10
    • Storage: 1 GB available space
    • Sound Card: Any
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
There are no reviews for this product

You can write your own review for this product to share your experience with the community. Use the area above the purchase buttons on this page to write your review.