Mutagen.io

Take control of Dr. Hero, a fearless scientist turned warrior, and defend the city against a mutant outbreak in this fast-paced roguelike action shooter.

Customize Your Arsenal
Choose from a wide variety of weapons—each fully customizable with up to 6 powerful augments. Whether you favor fire, ice, explosives, or rapid-fire madness, build your perfect weapon to suit your playstyle.

Upgrade Your Hero
Collect mutagens and coins to enhance your hero's stats, unlock new abilities, and level up your skills. Adapt and grow stronger with every run.

Deep Strategy, Endless Combos
Mutagen.io is more than just shooting—it's about strategic builds and synergies. Combine weapons, augments, gameplay cards, and character traits to unlock powerful and unique playstyles.

Cartoony Action, Vivid World
Enjoy smooth, over-the-top animations and a bright, stylized art direction. The chaotic mutant battles are brought to life with satisfying effects and personality-packed enemies.

Challenging Enemies, Evolving Gameplay
From swarmers to brute bosses, every mutant has unique attack patterns and behaviors. React, adapt, and survive against waves of increasingly difficult enemies.

Why You'll Love Mutagen.io:
Deep customization and build variety
Fast-paced, satisfying combat
Unique weapons and augment system
Colorful graphics and smooth animation
Roguelike progression with endless replayability


No two runs are ever the same. Can you build the ultimate mutant-slaying machine?
Download now and join the fight!