In Once Human, players can choose between the Mayflies and Rosetta factions during the Prismverse's Clash Scenario. Check out our guide to learn which faction you should choose and if you can change factions later on.

Which Faction Should You Choose?

Choose Your Faction Based On...
Specializations and Gameplay Fashion and Cosmetics Lore and Backstory

Choose Based on Specializations and Gameplay

At levels 5, 20, and 40, players are guaranteed to receive specializations tailored to their chosen faction, providing distinct advantages and playstyles.

Mayfly Specializations

The Mayfly harnesses world-class bioengineering technology to elevate their capabilities. By defeating deviants, they can extract gene fragments to create powerful infusions they inject into themselves to enhance their physical abilities.

For example, the Nurture Coherence Injection transforms you into a resource-gathering machine, boosting your mining and logging skills, making you a master at gathering resources. If you’re looking to up your combat game, the Judgment Coherence Injection enhances your effectiveness in battle. And with the Speed Coherence Injection, you’ll find yourself moving with newfound agility, allowing you to navigate the battlefield swiftly and efficiently.

Rosetta Specializations

Rosetta stands at the pinnacle of technological advancement, wielding the most sophisticated mechanical innovations in existence. Renowned for their engineering prowess, they command customizable drones that revolutionize combat and exploration.

Take the Rosetta Gathering Drone, for instance—it autonomously hunts down and collects the rarest, highest-level ores in your vicinity, ensuring you never miss a valuable resource. When it’s time to unleash firepower, the Rosetta Firepower Drone swoops in to rain destruction on enemies. And for those who crave adventure, the Rosetta Exploration Drone replaces V, and allows members to glide effortlessly, with no limitations on takeoff and does not decrease altitude during flight, making exploration and navigation a breeze.

Choose Based on Fashion and Cosmetics

While the jury's still out on whether Mayfly and Rosetta cosmetics are exclusive to their factions, one thing's for sure: you’ll want to deck yourself out in style! These fabulous cosmetics can be earned as rewards during Seasonal Phases or snagged from the Season Shop, specifically in Prismverse's Clash Loot Crates.

Mayfly Cosmetics: Fastwind Mayfly Set

Who says you can’t rebel in style? With the Fastwind Mayfly Set, you’ll be turning heads while giving the finger to conformity! This set is bursting with bold colors and edgy streetwear that screams, I’m here to save the world, but first, let me slay this outfit!

You'll be rocking the rebel style so bold you practically have your own theme music while saving the world from those Rosetta tyrant and tryhards.

Rosetta Cosmetics: Rosetta Vanguard Set

Step into the battlefield with the Rosetta Vanguard Set and embrace a look that’s as chilling as it is commanding. This striking gear is designed to make you look like a cross between a top-tier elite soldier and a wight draped in its flowing white cloak.

Prepare to strike fear into the hearts of your enemies and those filthy Mayflies!

Choose Based on Lore and Backstory

The Mayflies Are Heroic Underdogs

Mayfly is the rebellious underdog in this chaotic narrative. Formed by a band of daring Beyonders and tech-savvy escapees from Rosetta, this organization is all about fighting back against tyranny. With a history steeped in resistance, Mayfly has thwarted numerous nefarious plots from Rosetta, but not without cost—their ranks have dwindled due to relentless clashes and sacrifices.

Joining Mayfly means aligning yourself with a faction that embodies hope, rebellion, and a fierce determination to reclaim humanity from oppressive forces. If you crave a story of struggle against overwhelming odds, then perhaps it's time to answer the call of the Mayfly. As of the publication of this article, relatively few players have chosen Mayfly compared to Rosetta.

Mayfly safe zones include Deadsville and Meyer's Market.

Rosetta Is on the Path of Redemption

On the flip side, we have Rosetta, the monolithic tech giant that survived the world’s collapse and emerged more dangerous than ever. Named after the Rosetta Stone, this faction is obsessed with radical research into heterospace life, pursuing the audacious goal of “uniform evolution” for mankind. Their quest for control and power led to the downfall of civilization, and they’re not done yet—Rosetta continues its secretive and often unethical experiments, pushing boundaries that challenge human comprehension.

However, both V and Mitsuko agree that this version of Rosetta in the world of Prismverse's Clash is more redeemable, as it now focuses on a path aimed at saving humanity—to safeguard humankind's future.

Rosetta safe zones include Blackfell and Greywater Camp.

Can You Change Factions?

No, You Cannot Switch Factions

Once you choose a faction, you’ll be locked in for the duration of Prismverse's Clash! So think carefully and rally your friends before making your decision—this choice could shape your adventure!

Which Faction Are YOU Going to Choose?

Will you join the daring cause of the Mayflies or will you pledge your allegiance to the Rosetta Evolutionay? Remember, both factions are battling for the future of humanity! The choice is yours! Drop your thoughts in the comments section below and let the faction showdown begin!

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Once Human Related Guides

Prismverse's Clash Guide and Map

All Prismverse's Clash Guides