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.

<h2 class="bb_tag" ><strong>Contagion Protocol</strong> is a brutal, stylish bullet-hell roguelike where survival is never guaranteed and the infected never stop coming.</h2><p class="bb_paragraph" >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.</p><h2 class="bb_tag" >A Bullet Hell in the End Times</h2><p class="bb_paragraph" >Mow down waves of the infected with an arsenal that grows as fast as the horde.<br>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.</p><h2 class="bb_tag" >Extraction Survival</h2><p class="bb_paragraph" >Survive long enough to face the final boss.<br>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.<br>Only a successful extraction earns you <strong>Contagion Credits</strong>, used to unlock powerful permanent upgrades back at the Safehouse.</p><h2 class="bb_tag" >The Safehouse</h2><p class="bb_paragraph" >Your base between runs - the only place untouched by the plague.<br>Spend earned credits to unlock passive and active upgrades: ricochet bullets, explosive ammo, extra companions, or new character abilities.<br>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.</p><h2 class="bb_tag" >Weapons and Chaos</h2><p class="bb_paragraph" >Experiment with dozens of evolving weapons and brutal passives:</p><ul class="bb_ul"><li><p class="bb_paragraph" >Cleavers, rotating blades, boomerang axes, reverse shotguns, radial bursts, and more.</p></li><li><p class="bb_paragraph" >Stack upgrades for speed, damage, armor, regeneration, and bleed effects.</p></li><li><p class="bb_paragraph" >Watch chaos unfold as blades orbit, bullets explode, and the screen fills with blood and motion trails.</p></li></ul><h2 class="bb_tag" >The Infected Horde</h2><p class="bb_paragraph" >Every run pits you against an ever-growing swarm:</p><ul class="bb_ul"><li><p class="bb_paragraph" >Over fifteen zombie types: runners, tanks, soldiers, acid spitters, healers, and summoners.</p></li><li><p class="bb_paragraph" >Enemies evolve and grow stronger the longer you survive.</p></li><li><p class="bb_paragraph" >No waves, no downtime - just constant escalation until extraction or death.</p></li></ul><h2 class="bb_tag" >Maps and Settings</h2><p class="bb_paragraph" >Explore vast, open environments ranging from rural Americana wastelands to crumbling cities.<br>Each map offers unique pacing, hazards, and spawn patterns that demand new strategies.</p><h2 class="bb_tag" >Developer</h2><p class="bb_paragraph" >Contagion Protocol is developed solo by an active-duty military member - built during off-hours, late nights, and early mornings.<br>It’s a passion project designed for players who crave raw, replayable destruction and unrelenting combat.</p><h2 class="bb_tag" >Features</h2><ul class="bb_ul"><li><p class="bb_paragraph" >Endless enemy spawns - dynamic, escalating chaos.</p></li><li><p class="bb_paragraph" >Dozens of melee and ranged evolutions with deep upgrade synergy.</p></li><li><p class="bb_paragraph" >Permanent progression via Safehouse unlocks.</p></li><li><p class="bb_paragraph" >Four survivors at launch, each with unique playstyles.</p></li><li><p class="bb_paragraph" >Industrial metal soundtrack driving every gory encounter.</p></li><li><p class="bb_paragraph" >Massive replayability - every run ends in destruction or extraction.</p></li></ul><p class="bb_paragraph" >If you thrive on pure action and games like <strong>Vampire Survivors</strong>, <strong>20 Minutes Till Dawn</strong>, and <strong>Rogue: Genesia</strong>, this is your next obsession - until the horde gets you.</p><h2 class="bb_tag" >Ongoing Development</h2><p class="bb_paragraph" >Contagion Protocol is a continuous, community-driven project.<br>Player feedback from demos and early builds will directly shape new content, balance updates, and features.<br>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.</p><p class="bb_paragraph" ></p>

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Contagion Protocol Achievements