Mayfly is a Ren'Py adult visual novel by JasonTon, set in Devon, a massive city where wealth and violence coexist. You play a male protagonist in a world where superpowers are rare and often abused, while private security groups and government Bounty Hunters shape the streets. The game combines romance, sci-fi, and harem themes, with animated 3D CG art. Choices affect your companions and the city's fate.
The current build is v0.3 Reset, released on July 21, 2026, and development appears ongoing. It runs on Windows, Linux, Mac, and Android, with English, Russian, Traditional Chinese, and Simplified Chinese support. The game is uncensored. The update adds over 1500 new renders, 35 animations, 5500 story lines, thousands of code lines, new music and sound effects, an ending theme, richer expressions, and new systems such as terminal, characters, wallpapers, and chat, plus updated gallery and character features.
Developer's description
"I eneath the streets of this city, the smell of blood and rust lingers. Portraits of the powerful hang everywhere, trying to cover up their crimes."
Spoiler
Devon. The world's only mega-city. A place where splendor and squalor, order and chaos… every contradiction lives side by side. You might find gold on every corner, but don't ignore the corpses it's piled upon.
Superpowers touch only a few, and most of them use that power for selfish gain. The government, at its wits' end, had to let private corporations handle security, giving rise to all sorts of "vigilantes." Not all of them are out for justice. You'll need to watch carefully… Yeah, the only person you can trust is yourself.
The government didn't give up control entirely. They formed a secret police force of superhumans called the "Bounty Hunters." They're the more vicious, more powerful claws of the state.
What will you choose? To drown in this dazzling city of sin, or… to become a dying lamp lighting the way forward? It's tough. Your companions have their own ideas too. Maybe every choice you make with them will twist the world's fate.
"Will you live a mayfly's brief life in this gilded metropolis, or carve an eternal legend into the streets?"
"After all the suffering, is what awaits you truly light and warmth?"
v0.3 Reset
1500+ New renders (+60%)
35+ New animations (+150%)
5500+ New story text lines (+83%)
10000+ New lines of code
20+ New music tracks
50+ New sound effects
New ending theme song
Brand new render effects created
Richer facial expressions for characters
New terminal system added
New "Characters" feature system added
New wallpaper system added
New chat system added
Gallery system updated
Character system updated
v0.2 Reset
1135+ New Renders
14 new animated CGs
3100+ entirely new lines of story text
6850+ entirely new lines of code
30+ new music tracks
100+ new sound effects
New end credits scene
The rendering quality has been significantly enhanced
Added Volumetric Light/Volumetric Fog
Higher-polygon models and new skeletal rigs have been added to the characters, allowing for more refined and detailed body movements
The MC's model and skin have been updated, making him look... more handsome, perhaps?
Significant optimizations have been made to the transitions and sound effects in version 0.1, with a revision rate of over 70%
A cheat document has been added... Open it, and it will guide you on which choices to make
v0.1 Reset
1050+ brand new renderings
27+ new animated CGs
3500+ entirely new lines of story text
7300+ entirely new lines of code
40+ new music tracks
300+ new sound effects
+ Language: Russian
New interface and UI
New rendering effects
New end credits scene
Added affection menu
Added gallery
New characters + relationships + storylines
v0.2
1028+ New render.
20+ New Animation
4700+ New code
27+ New game soundtrack
84+ New game sound effects
Added a new English translation (thanks to Ozpoz)
New visual effects (light and shadow, materials, character states)
New main game page (dynamic)
New end credits acknowledgement
Changed many unsuitable UI effects
Fixed display error in the English font, now with better visual effects.
Warning!
0.1 archives will no longer be available in version 0.2, this is not a bug.
Because the game is defaulted to English, it will be reset to English when you switch to another language to read the archive. This is not a bug.
v0.1.1
In this update I have made English the default language and fixed some text errors.
Android's main menu display bug fix.
v0.1
Pictures: 750
Code: 4750 lines
Music/sfx: 23/52
Animation: 29 segments
Language: English, Chinese (Traditional), Chinese (Simplified)
Player reviews
Player rating4.5 / 5 · 20 ratings
Written reviews20 · avg 3.7★
Positive (4–5★)65%
Latest review2026-02-05
What players say
Positive overall, with strong visuals and story, but some players criticize pacing, exposition, and protagonist.
5★10
4★3
3★0
2★5
1★2
Players like
High-quality HoneySelect-style visuals and character models
Interesting story with vigilante, superpower, and cyberpunk themes
Attractive and well-designed female characters
Fitting music and atmospheric scene lighting
Common complaints
Rushed story pacing and excessive exposition dumps
Weak or frustrating main character behavior
Cliché opening and predictable family tropes
Best for players who enjoy high-quality HoneySelect-style renders and early vigilante superpower stories.
Summarised from 20 written player reviews.
Shortkingunderworld1012026-02-05★★★★★
4/5 stars 4 now. OK so it's probably just me being biased I find it cool 2 play as more of a vigilante in a superpowered world than as a straight up "be a hero" wannabe. The opening main storyline…
Roccadorso2025-07-22★★★★★
Another Eternum ripoff but without a story. By the end of V0.2 players know very little about MC, aside the usual trope "dead parents, raised by neighbour", that MC is a weakling, pushedand walked over by anyone and that the…
Ju-Kun2025-07-03★★★★★
This game deserves more attention and a higher rating. In a sea of lazy, uninspired, repetitive games, we need to make sure we recognize and highlight when something of greater substance floats along. I think that's what this game is…
★★★★★(20)
