The city’s sewers stink of blood and rust. Portraits of the wealthy and powerful line the streets, attempting to cover up the heinous crimes they’ve committed.

 Is it truly brightness and warmth that meets you after suffering?


The story is set in the city of Devon, the country’s only megacity. Plagued by a glaring wealth gap, Devon eventually divided into the Uppercity, where company execs and corpos live amidst opulence and luxury, and the Undercity, where factory workers and gangsters, including triads, dwell.

A decade ago, a phenomenon of unknown origin resulted in the sudden emergence of
superpowers among individuals in and around the city, primarily among teenagers. However, this unexpected development presented a formidable challenge for the government, as these superpowered individuals started to engage in criminal activities. In particular, they targeted the Uppercity due to deep-rooted inequality, resorting to acts such as kidnapping and murder of the wealthy.

To tackle the rising crime rates, the government is compelled to implement two bills: the Vigilante Act and the Superpowers Act. The former empowers selected individuals with superpowers to go beyond traditional law enforcement measures to combat criminals, while the latter treats superpowered individuals differently from regular humans, eliminating age restrictions and establishing dedicated prisons for them.

Over time, superpowered crime in Devon steadily decreased thanks to the state-funded Vigilantes who are entrusted with the task of upholding justice. However, as the Vigilante force expanded, the balance started to shift as some Vigilantes with concealed motives became a new source of instability in the city. Additionally, after the initial surge of superpowers, no new superpowers have emerged in Devon. This results in a growing public demand for the abolition of the Vigilante Bill, and a change in public perception of Vigilantes from once-revered heroes to a more critical stance.

In such a setting, where you are a member of the Vigilantes, are you truly willing to let others dictate your fate? I believe the answer is unequivocally “Never.” Every decision you make, whether significant or seemingly inconsequential, has the potential to impact the relationships and alliances you form during your journey.

Is it to live fleetingly like a mayfly in this superficially vibrant city, or to leave a lasting legacy as a legend in the streets?


Unique Setting

The megacity of Devon, where the game is set, is afflicted by a wealth disparity and superpowered people. The gameplay gains depth and intrigue from this unusual scenario.

Engaging Storyline

In this engaging game, players take on the role of Vigilantes, charged with maintaining justice in a corrupt and crime-ridden city. The player’s choices can affect alliances and relationships in various ways, which makes the gameplay more intricate.

Superpowers and Crime-Fighting

Gamers can use superpowers to fight crime and keep the city law and order in the game. Through the software, users may feel what it’s like to be a superhero and change the virtual world.

Moral Dilemmas

Players are forced to make difficult decisions that could affect the game’s outcome as the game presents them with moral issues. This gives the game additional complexity and realism, which enhances its immersion and provokes deeper thinking.


  • 3dcg
  • Ahegao
  • Animated
  • Big Ass
  • Big Tits
  • Cosplay
  • Creampie
  • Footjob
  • Handjob
  • Harem
  • Male Protagonist
  • Mobile Game
  • Monster Girl
  • Oral Sex
  • Romance
  • Sci-Fi
  • Superpowers
  • Teasing
  • Titfuck
  • Vaginal Sex
  • Voyeurism


Hello everyone, this is JasonTon
I’m trying to make my first adult R18-oriented 3DVN game – “Mayfly”
I will try to bring you a visual experience full of my own style, and I am sure it will not disappoint you.
Thank you for your support! I hope you’ll have a great gaming experience!


Frequently Asked Questions

What is MayFly?

MayFly is a short yet horny visual novel developed by Jason Ton.

Who developed the MayFly?

MayFly was developed by Jason Ton.

When is the next update?

The timing of the next update is not specified, but Jason Ton will keep players informed about it through its social media accounts.

When was the initial release of the MayFly?

MayFly was released on Jan 11, 2023.

Where can I report bugs?

For bug reporting, utilize the game’s Discord server. Alternatively, you can leave feedback by commenting on either the Patreon or platforms.

How can I become a patron?

Becoming a patron is easy. You can become a patron by clicking on this link to visit jasonton’s Patreon site:

Will you add more characters to the game?

During the initial stages of development, there’s a promising opportunity to introduce more characters, elevating the gaming experience. Stay updated for announcements and the potential integration of new characters as development unfolds.

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  1. JohnSmithDaGuy Avatar

    This is beautiful. I love the art and aesthetic vibe of this game. I’d love to see more.