Deep underground, in an undisclosed research facility, a scientist is working on a secret experiment...

Welcome, to the SYNN:LABS.

It is your task to feed the creature chemical compounds, keep an eye on it's vitals, while managing a constantly growing array of mutations and potential injuries.

But the payout; a magnificent creature, as deadly as it is obedient to you as it's creator.

Mobile users: You can tap to move around, and then two-finger-tap to interact.

Adult Content Warning

This game is intended strictly for adults (18+) and contains explicit sexual content, nudity, and adult themes.

There are six achievable lewd scenes in the game, unlocked by completing one of the metamorphosis processes:

  • Lycanid: Big hairy male-coded werewolf like beasts lifts the main character up and penetrates her from behind.
  • Decapod: Tentacle female-coded creature wraps around the main character, squeezing and penetrating her with her tentacles.
  • Necromorph: Slick male-coded insectoid alien creature grabs the main character and penetrates her from below.
  • Gargolax: Strong male-coded gargoyle'esque creature lifts the main character and penetrates them from above.
  • Raptorex (Patreon Exclusive): Muscular bipedal male-coded monster, very hung, anal scene.
  • Bonus solo masturbation scene.


Production

Collab between Gecko The Dev and RoMeat.

Developed during and for the NSFW MiniJam #27,  where the theme was Metamorphosis.

No AI (beyond a bit of spellcheck and code assist) used for this project..

Follow along development at Developer Twitch Stream. I streamed daily and will compile together a video of it all once the jam is over.

If you spot a bug or just wanna talk about how its made, hit me up on my Discord Server. Typos, inconsistencies, etc., it's all welcome.

If you want to support the development or want a cameo within the game, visit our Patreon.

Updated 8 hours ago
StatusPrototype
PlatformsHTML5, Windows, macOS, Android
Release date Mar 22, 2026
Rating
Rated 4.2 out of 5 stars
(74 total ratings)
AuthorsLizardFactory Games!, rom34t
GenrePuzzle
Made withUnity
TagsAdult, creature-creation, Cyberpunk, Female Protagonist, genetics, metamorphosis, monster-fucking, NSFW, Pixel Art, Sci-fi
Average sessionAbout a half-hour
LanguagesEnglish
InputsKeyboard, Mouse
AccessibilitySubtitles
LinksTwitch, Community
ContentNo generative AI was used

Download

Download
SynnLabs (Windows) 54 MB
Version 24 1 day ago
Download
SynnLabs (Mac) 63 MB
Version 12 1 day ago
Download
SynnLabs Android (Beta) 62 MB
Version 12 8 hours ago

Development log

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Comments

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I think you shipped the android version with a bunch of stuff that shouldn't be there.... one of the folders literally says do not ship!

Heh, that sounds like me. I will ship a new build later today.

It has now been solved, and safeguards have been put into place so it wont happen again :)

(1 edit)

why does it skip a day when resting? whats the point of having 7 days then if it just goes 1-3-5-7? been trying to play for 30 mins it doesnt seem like anything changes at all

I'm not sure what you mean by this, there are seven days in the game to complete the mission... Which version are you using?

it loads to the main menu and wont interact with me at all

Sounds strange, I am unable to replicate this myself... Which version are you using?

(+1)

It doesn't grow past 1 no matter how much I feed

Did you check with the criteria in the bio grid?

(-1)

什麼時後做完整的安卓版號

(+2)(-1)

I cant build a live i fail everytimei try it

(+1)

When you get the biomass, check which mutations turn green on the grid. Then, use temperature to avoid unwanted ones

什么时候能更新一个中文啊?

encountered an issue where if you're zoomed in during the solo masturbation sequence when it finishes, the game stays zoomed in.

Unless I'm missing a button. On windows 10.

Ah, good find, I will fix it.

Ran into a bug where the tiles can generate outside of the visible area of the grid.

Oh dang? That should really not be able to happen, will look into it.

The games marked as playable on mobile but I can't interact with anything. I can only walk around

Try two-finger tapping or double tapping when close to an interactable.

This game just shows my why I should never be a scientist

(+1)

... Because it went well or because it went poorly? Now I'm curious...

Horrible...absolutely horrible
My guy didn't even get to freaking grow, he freaking died as a fetus XD

heyy! so i loved the game, but i was wondering if theres plans to add some clear tutorial or guides about the biomasses like how much of what to archive some conditions, its so confusing to make them, i played more than once but i still dont get it! only made one of the monsters but its a really well made game.

thank you for the effort btw!

Hi Witchwitas, there is a tutorial in the Communications Terminal, but last patch we also added a lot of Quality-of-life stuff to help ease people into the process.

(+2)

Absolutely loved everything about this game! It's challenging, but not in an impossible way, and the animations are really good too! (I just wish each monster had more than one animation)

Still, it's a REALLY great idea and concept. I wish you the best of luck with this project! Had a lot of fun playing it :)

nice

BTW, what the point of percentages? Like, I've never got 100%, besides I've finished with all creatures

(+1)

Hmm... That's not great. It should go from 0 to 100% as you complete the creature. Perhaps my math is simply off... :P

(+1)

In a new update (0.4.22) encountered a problem with a visibility of a victory scene. Made it all way through to a tentcale creature victory but after text there was only a black screen (in previous versions everything was ok)

I wonder if in the near future that their will be either a guide for the required chemicals to add, or cheats

I played the game for a while. I wish there was an "easy mode" where the paths are pre-determined rather than playing random. I have ungodly poor luck with dam near everything and this game isnt an exception.  

Dang, sorry to hear that. It's not impossible we would implement some difficulty adjustments (or anti curse crusifix) in a future patch :)

(+1)

RNG sometimes impossible? xD

My memory is not the best and every day I need to check again which mutation I wanted to gain. A little annoying.. ^^' Something like right-click to mark mutations which I plan to gain would be really helpful. Maybe you can add something like this? ^^'

(+1)

That could definitely be a thing, we want it to be a challenge but of course not too off-putting. I will brainstorm something like this for a future update.

(+1)

This game rules. The puzzle elements took me a while to figure out, but once I did I was hooked! Very cute game with solid mechanics!

(+4)

I dont understand the vitality one isnt it mean get pure biomass and one that not carbon? Like full red and 1 orange isnt that right? Can someone help?

In game it says that this is version 0.3. Are there plans to do 1.0v with, idk, more monsters and maybe galery mode for already cleared endings?

Also the game is cool and it quite intuitive and not very hard, so I can't really understand some comments down bellow about rng and difficulties

(+1)

Thank you for the kind words, and yes, we are doodling on future updates. And for difficulty, it hits some more than others, and we are trying to make the RNG less chaotic, just takes some time and testing.

Game starts on other screen and does not have an option to change it.

Game DEV 101: many people have more then one screen 

(+1)

Hey bud, sorry to hear you are having trouble. Have you tried going into game settings, turning off fullscreen, then dragging the game over onto the screen you wish to play on and then resuming fullscreen?
If that doesn't work, try ctrl+enter to toggle fullscreen on/off.

What settings?

In the main menu? I do realize that settings should also be accessible from the ingame pause menu, and I'm implementing that today.

missed the deadline by one SINGLE cube of a chemical, its pretty fun but i wish this game that requires you to plan things out didnt use rng as a mechanic. 

I guess I should at least try and tone down the RNG a bit in a post-jam update, or at least put in some safeguards against the worst of the worst. ^^ 

can someone give me a simple rundown on how to evolve our creatures? I didn't really understand the tutorial on how to do so XP

can’t play in the browser on mobile because all it does is move my character

I just beat it using the mobile browser

(-1)

How do you press the E button on mobile?

Two finger tap.

(+1)

Great game, the gameplay is its strong point. I hope to see more of this in the future.

Thanks ^^ We are cooking on what to put in a post-jam update.

(+2)

I can't play it on mobile. I can't interact with anything.

(+1)(-2)

Sounds strange, just tested it on my devices and everything should work. What kind of device do you have?

(1 edit)

try it again VodJewel

I am using a Samsung.

(+2)

this game really gets you thinking, and I love it. Animations are amazing and the actual gameplay is pretty interesting. I wish there was more to this game, rather than just building a creature for pleasure, but I really enjoyed it

(+2)

Absolutely love it. Kinda wish there was more creatures. I would love to play more.

(+6)

Would have loved a gallery to go through the three endings again once you unlock them tbh

(+4)

Absolutely, it's on the backlog of things we wanted to make, but since it's a game jam, we simply ran out of time.

Might do a post-jam update once the code freeze is over, if there's interest in it ^^ 

(+2)

Happy to report, this is now integrated (through the achievements you can relive the monstrous moments)

Can the decapod have a futa/trans option?

(+3)

I wanna ⭐⭐⭐⭐⭐ the game but I don't see the option for it anywhere on the page, so I'll just have to leave a comment.

(+1)

Should be rate-able from the Jam page, right?

Not the same way. Rating it for the jam is for jam ranking. It's the button to rate the game itself that I'm not seeing. I'll show an example of it on another game.


(+1)

We have rating enabled, i think it's just because the game jam is running, but not sure :P Its not something we have toggled off intentionally.

I'll just have to check back later. Idk why itch be buggin for me so, I just wanna spread some love😭👍

(+2)

How to play on mobile?

The browser version loads correctly, I can move around, but I cannot interact with any of the devices.

(+3)(-1)

Hi Fenex, it's tap to move and then two finger tap to interact with objects. Not an ideal setup, but mobile/tablet support was really a bit of crammed in during last hours of the jam xD