Mods v3

We don’t host our extension on the  Chrome Web Store anymore, because they don’t support our amazing features. So for now, you will have to use the userscript for new features. Mods UserScript v3 Mods v3

Major update released!

Hi again all! Today I proudly announce the new major update, V3.0! As you may know already from the previous coming-soon article ( ), a lot of new features have been added, and we actually listened to your suggestions. Mods UserScript v3-2 Mods UserScript v3

The new features are:

    • Party mode!
    • Bigger map
    • Seeing your party members dot on the map
    • Seeing your friends dot on the map
    • Brand new UI, some improvements to the in-game UI
    • Customizable next gen extension.
    • Setting a clan logo
    • Setting a clan name
    • Setting a clan tag
    • Added popular clan tags [Hero] [SR] [Schnitzel] [Gorgrond] [pewdiepie] [skYd] [mlG] [] [OpKa] [xTRA] [SFM] [EPIC] [MG]
    • More Skins!
    • A Bot (BETA) This was going to be added, but it’s too unstable. For now, we’ve got AFK/pause mode [F key]
    • Multi language (German, Turkish, English, Spanish, Dutch, French, Polish, Russian, Brazilian Portuguese, Finnish, Hebrew and Czech for now, if you want more added, don’t hesitate to contribute and we’ll add your name to the credits list!)
    • Easier access to support and contact
  • As requested, zoom reset now also works with Period (.) for keyboards without a Tilde key

Change logs: 
– Use your mouse/keyboard to zoom in and zoom out (Zoom Hack Mod) (Zoom In/Out = Mouse Wheel Scroll) to i/o keys ( i for Zoom in / o for Zoom out )
– You know your current position.
– Track your FPS with the FPS counter
– Track the IP of your friends’ server with your current server’s IP address.
– Connect to your friends’ IP and play together.
– Owning a low-end system? No worries. The plain background makes it compatible with – any system.
– Glow also lessened to support low end systems.
– Choose your own graphic mode compatible with your system.
Play with friends (direct connect to the servers)
– Saving nick and settings.
– Selecting a Server.
– Background Changer (Upload a background, then click “Set BG” to set it.)
– Toogle Snake Skin Rotator [Start or Stop -W] New!
– Respawn [ESC]
– DIE Back to main menu [Q]
– Toggle HUD – [TAB]
– Reset Zoom – [Tilde]
– New UI
– All permission, bugs and issues fixed!
– Tracking and saving best score New! (v2.1.0)
– Unblocked skins New! (You don’t need to share social media) (v2.1.0)
– New skins ( Skins Mod) “(v2.1.0)
Black Snake Skins New! (v2.1.0)
– White Snake Skins New! (v2.1.0)
– Help text added in game for Zoom Mod & Speed (v2.1.0)
– Fixed Keep Zoom Hack (v2.1.0)
– Fixed Save Background Settings (v2.1.0)
– Leaderboard text change to “Top 10 Heroes” (v2.1.0)
– Length and Rank area changed (v2.1.0)
– *Fixed New skins ( Skins Mod) “(v2.1.1)
– Zoom in/out is faster now (v2.1.2)
– * Fixed & removed auto open (2.1.3)
– +Added zoom option to i/o keys ( i for Zoom in / o for Zoom out ) Mods UserScript v3-3

This allows for amazing cooperation, because you can team up with friends and meet them in the server because you can easily see them on the map.

Planned features are:

    • Clan Wars
    • In-game radio
    • In-game voice chat
    • Bot
    • Screenshot button
    • Key remapping
  • More settings

As always, you can contribute and ask for new features by shooting us a message. You can easily contact us using the in-game “Contact” tab, too! By the way, before you ask any questions, view the in-game “help” tab and watch the amazing video guide. This will solve most – if not all – your questions.

Make sure you disable any other extension and scripts first!

How to install user scripts? Mods User Script

How to install Mods? TUTORIAL


  1. Pingback: 11 Best Mods To Win Easily in 2021 - Ask Bayou

  2. Can you please send reply to this message with the script cause for some reason I can’t access GitHub.

  3. Hey guys! Morning.

    I followed all the tips, but when I install nothing happens. I’ve already cleared my cache, removed extensions, and all the others things. does not work here 8(

  4. How do I bring the mod menu up? I have tampermonkey and I enabled the mod but how do I bring it up?

  5. Oscar Maspons Reply

    How why are you lazy make v4.4 or update v4.4 we want it we want it lazy people do your jobs v4.4

  6. Oscar Maspons Reply

    we still want the new mod v4.4 even though new .io games and slither is not as popular any more but if you releiese v4.4 mod that is why we want new mods new contont new skin its been months reliese it please respond see this comment or update it’

  7. love slither io Reply

    hi i installed it on fire fox i got the mod screen menu but when i press play it does not start ….can any one help

  8. It was good mod, you say that you will update to v4 a couple months ago, when will it be updated ?

  9. umm why can’t we just download it this is stupid man doing all kinds of stupid stuff wheres the download at shit

  10. Hola que tal he instalado el tampermonkey y la extensión del slither pero esta cuando le doy a recargar la pagina no carga osea el mod no se activa quisiera saber por que si es algun problema del mod


  11. Someone Who Loves Reply

    Is this Even safe Im really scared for my laptop to get a a Virus even if I have 14 virus, add protecter and all that stuff Im trusting this thing I guess

  12. is their away that i can download this app on a apple laptop… if their is away plz tell me

  13. slitherio comande Reply

    esta mod e bom para caramba e não da lag e zoom e tudo mais

  14. ТИ КРУИШ НЕЩО Reply


  15. if in use it and close google and open it i need to install again

  16. i did all you told me but then the page of slitherio mods doesn´t open i don´t know why

  17. corey brandon luke jake harald david foden and katelin m Reply

    this will be sick if you make it so it automaticly gets the mods on when you type in google

  18. kristian manovski Reply

    лау много як мод но има лакове в хаковете

  19. Jon Wrighton Reply

    my name is jon i will like this because it has no lag on it

    • Mustafa T

      I have bought an Apple laptop too! Do these mods work for IOS Greetz from India

    • steffanie richards

      why is this site not replying on the question ? i really want to know too !!

    • Lol heck no

      They do NOT work on IOS, but they do work on Macs. I use an iMac and it works fine.

  20. colorswitchhack Reply

    i use this scipt and it’s work perfectly in my comp. Thanks so much for your share !

  21. Daniel SlitherioYt Gamer Reply

    I Want the NINJA Slitherio Invisimbli skin pls!!

  22. still is not working i have done all listed steps you have shown but when i refresh it, the slitherio homepage without mods is still there dude can you please help.

    • same here not working for me too it was working till now but now it stopped

  23. everytime i download the hack it just says untiitled! what to i do?

  24. Renan_Extreme Reply

    muito legal e essa é a extensão que tem a minhoca ninja?

  25. Daniel Mine Reply

    Whenever I Try To Download The Mod At The Top It Says “Invalid Script Header” How Do I Fix This? Someone Please Help

  26. MorganGeek Reply

    Je suis francais, et je n’arrive pas a l’installer !…..

  27. It says on the vid ‘add extension’ button, but WHERE IS IT?

    • you need to install tampermonkey first to run this script

  28. i don’t know how to do this!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  29. The script doesn’t work
    Stupid mod. It says Invalid script header….
    FIX IT

  30. ElAlesiBemPEola Reply

    ameoh crea mejor hack la sheni dice que va muy laj eeeee traeme un venetoh con el putito gusto de cosecha dale o te cago a tiro gil

  31. Tinie Tempoah Reply

    very good, very helpful and amazing. I played with my friends all day with this much. Even though i am a millionaire and i can ask someone to hack it for me but its more fun when you hack it and accomplished it. Thank you

    • why is u hatting bro?
      can you send me some money tho:)))

  32. Tinie Tempah Reply

    very good, very helpful and amazing. I played with my friends all day with this much. Even though i am a millionaire and i can ask someone to hack it for me but its more fun when you hack it and accomplished it. Thank you

  33. Hey um, everything is working fine with the script and what not, but I can’t seem to change the quality of the playing from low to high, whenever I click it to go high it automatically goes back to low?? Is there a reason for this or is it just my laptop?? Thanks 🙂

  34. MaxSlither Reply

    u need to delete ur tampermonkey then install it back then install script

  35. My mod isn’t working i have uninstalled it and reinstalled. i reinstalled both Tampermonkey and the mod itself. plz help

  36. How do I install for chrome? And why when I try to install it says invalid script header?

  37. I’ve downloaded the script with greasemonkey… how do i open the game so that i can literally play it?

  38. tampermonkey install fine, then click install mods and it goes to a blank page but does not give me the install button the second time and even though it says reinstall nothing happens, i have cleared cache, no other extensions, no nothing, was working and now doesn’t can’t fix, please help!!!

    • right click on tamper monkey icon on your browser -> settings -> installed userscripts then you can remove from list

  39. Hi, I would like to contribute to the language translations! Who should I contact? -Jeff

  40. Hello. All of a sudden my mods are not working. I re downloaded tampermonkey and installed this mod. It shows that its on when I click on the dashboard however when I go to the site it shows that it isn’t. I can’t seem to figure it out :/

  41. Kirill Riesinger Reply

    I tried all the things you asked me to do and it still won’t let me zoom out. Give a bit more specific advice as to what I should do rather than the generic crap you give everyone else.

  42. Kirill Riesinger Reply

    The zoom mod for v3 isn’t working. Any idea on how to equip the mod?

  43. it is lagging and i can´t see anything just the map and the leaderboard

  44. Siim Kr. T. Reply

    I really hope that you add Estonian language. I know that Estonia is little, but… please. 🙂

    Waiting for answer:

    Siim Kr. T.

  45. Can you add a graph showing your score or a feature showing your time alive and longest time alive? A reply would be greatly appreciated.

    – Andrew

    you copy the script and use tamper monkeys script maker to make it
    and paste it in and hit save but not on hard disk
    then to check you goto dashboard and YEA!!!!

  47. oh yeah mr krabs WHREARREAERAERRAEREAREARAe Reply

    i did everything
    clear the browser cache and all that
    so yeah this doesnt need help it needs to be fixed just lettin you know
    plus dont copy and paste instructions on HOW TO DOWNLOAD
    it needs to be fixed

    • Hey mate, this is not auto message but millions user using this one. Steps always same, you have to install tampermonkey/greasemonkey then you can use user.js files.

      Install Tampermonkey:

  48. PigPrincessYT Reply

    This is really good I have no problem at all apart from when i try and go on it comes up whith a black screen and 1 red dot. please help

    • PigPrincessYT

      also im trying to upload vids for yt bbut since this is happening i cant

  49. concha de tu madre pongan nuevos skindex por que si no que acemos putos

  50. Im Trying To Intsall THe Script But It Says ”Invalid Script Header” Im From Sweden So I Dont Now If IT Is That Cus Before I Haved The Mods 🙁

  51. Real TheDiamondStampyCat Reply

    When I click install script it just says at the top Invalid script header :/
    help please

  52. Greetings team, each color would fulfill a function, ose red can be wide, serious length green, blue serious teeth etc etc, these supplements would be interesting: D

  53. your mod undonloaded itself and i re downloaded it, but it doesnt work. also, i cant undownload anymore.

  54. You should give everyone mods when they start to play. Mostly, stop the lag.

  55. when i got my mods i got my high score of 27,563 and i went to the mod disspered and and will it save my high score on the bottem right

  56. I’ve done all the steps, and I still cant the mod to work. It gives me the option to create a party but I end up in a public server. Please help


  58. when I try to download the temper monkey appears that do not have title and the extension not be active

  59. Alexej Tint Reply

    I click “Install This Script Mods!” But it does nothing!

  60. I cant seem to play slither with my friends… i mean i dont know how to sign in. please reply.

  61. BeastSnipes Reply

    It says “Invalid Script Header”, I cleared my browser cache, downloaded tampermonkey clicked the link you put in everyone else’s comments and it doesn’t work. It just says
    “Invalid Script Header” at the top of my screen.

    • BeastSnipes

      and I removed all the other slither extensions


  63. Slither.IO Fan! Reply

    Hi! im a big fan of but theres a problem…

    its not to do with the mods or hacks or anything cuz i dont have any but there is SO MUCH LAG! ive tried everything! I watched youtube videos on how to clear lag, ive read articles but nothing works… My computer its self is fine, i think its server lag but it seems that every single server is laggy… what do i do?!?

    • Slither.IO Fan!

      Its not my internet either cuz everything else is fine, please onl have 300 at the most to a server and HOPEFULLY that works?

  64. DramaSketsBread Reply

    It doesn’t work, It just shows me the Slither Background and can’t play.

  65. [NOOB] Zihlan Reply

    helo but how am noob whit makings download game hack coin?????? chlas of chens is game too.

  66. Savannah Matos Reply

    How to Uninstall cause I have script mod and I move stupidly random

  67. why cant we install here and have to go to tampermonkey ?????

  68. Hey. Pls can you add invites??? PLS. (TO INVITE A WORM TO YOUR CLAN)

  69. sry but I don’t wanna delete the cache I only searched for the slither ones and deleted them and 3.3 doesn’t work, 2.0 worked fine but I deleted it for this one, plz can you give the old mod link please cuz whenever I try to get the older ones 3.3 pops up

  70. The menu shows up, but when I press play nothing happens and I just have to play without mods. Is it an error? Please don’t tell me how to install it, I already know. If it is an error, please fix it as soon as possible.

  71. Downloaded The Mods And They Showed Up, But When I Press Play Nothing Happens.

  72. How do you download this? I tried TamperMoney and it didn’t work. I’m using chrome. Plz help!

  73. Stealtheagle Reply

    I downloaded it but whenever i click play the screen turns white what should i do??

  74. Ok can you please fix the issue lately when you boost or zoom in/out, the game lags and freezes up, eventually just stops and I have to exit browser to start over. But then it just does the same thing again!

  75. i did all the steps with tampermonkey but i dont understand how to start playing from there

  76. 170.789.465.00 Reply

    hay has any one ever gotten 8,0988 points cause i have

  77. I watched the video and followed the steps but it intoned me to a page with a lot of text. I looked up videos on how to download it for mobile but had no luck. Please help me and make an easier way to download for mobile.

  78. I just do not understand i went to Tampermonkey and pressed install and it just sends me to a blank page and when i go back it keeps saying REINSTALL. Can you PLEASE tell me what I am doing wrong!

    • sorry i just tried and it worked but everybody looks weird

  79. I watched the video and followed the steps, but it just leads me to a page with text. I looked for mobile ways to install it but it doesn’t let me. Please help I want to have this for mobile.

  80. Yo, the play button is glitched and does not work. And I cant get into the game

  81. Hi, I want to help translate the mod into Danish. Can i get some sort of text file to translate, and then send back?
    If so you can send it to me on: [email protected]

    -Anton, Denmark

  82. For some reason when I try to make it high quality it keeps switching it back to low quality. Can someone help? Why won’t it let me play it in high quality?

  83. no descargen mods no me ando solo se queda conectando si no se me conecta mas es una mierda el mods

    • Glitch Reminder

      Cause you have an awful computer, and the game knows it.

  84. where did the new skins go? using greaseonkey for firefox, installed and several of the new skins i had are now gone, from the rainbow with white and black stripe, to the purple and lavender striped, to purple and pinkish colour to name a few. why are they in the other but not this one? or am i doing something wrong?

  85. The game was working fine yesterday. Today, it lags and freezes when I use boost. What’s going on? I already tried clearing my web cache and reinstalling script.

  86. doesnt install at all. Firefox I get get a white page with a ton of script no way to install. ON Chrome I get a yellow bar that says invalid script header. So it seems like this is impossible to do

  87. I tried to download it and it isn’t working, a banner pops up on the top of the window and says “Invalid script header”. I am using google chrome and i followed all of the steps in the tutorial video. It still isn’t downloading.

  88. if you don’t host chrome web store anymore than how do you get the extension than how do you download it.

  89. i love u slither .io ps i watched vid its not working wont installlllllllllllllllllllllllll

  90. It dosen’t download it just comes up with a page where there is loads of code

  91. IM a slither oi fan Reply

    Who to disable my skins mods im on desktop i dont know plz i wanna know i want this sobad

  92. It wont let me addd extention it says “invalid script header.”

  93. were do i download the mod or hack were lots of snakes just come crashing into my body

  94. 4 day of deleting cookies and extensions has gotten me no were. good by

  95. Some links on this page still reference 3.1, which doesn’t work.

    I found your link for 3.2 in the comments and it works.

  96. The issue people are having is that they have 3.1 installed I guess. Some links on this page still reference 3.1 , which doesn’t work(at least in chrome). I found your 3.2 version in a link from the comments, and it works.

  97. [ZyGang] Ceo Reply

    Okay. It was working fine a few days ago but now it doesn’t work. I read the tutorial, and watched the video. It’s still not working. Please fix

  98. what do i do when it says invalid script header i rlly want this

  99. I have everything installed and no other mods but this one and it doesnt work anymore…I tried reinstalling but no…….It worked fine 2 days ago plz help!!!!!

  100. what about the lag? coud we have ping and servers to chose the bether one?

  101. This is what the userscript currently is. the actuall script has been deleted and removed.

  102. The script is gone

    This script was deleted from Greasy Fork, and due to its negative effects, it has been automatically removed from your browser.

  103. It does not work for some reason I am useing chrome and tampermonkey it says due to its negitive effects from grease monkey we have removed it from tamper monkey and the script has no special things

  104. I’m curious but would it be possible to program a function to make your snake wrap in a perfect circle that goes with your length?
    The current defense/pause mode is okay but coiling into such a small dot makes it quite easy for others to wrap you up.

    • We don’t host our extension on the Chrome Web Store anymore, because they don’t support our amazing features. So for now, you will have to use the userscript.

    • We don’t host our extension on the Chrome Web Store anymore, because they don’t support our amazing features. So for now, you will have to use the userscript.

  105. You say to reinstall with the link above. But it’s still the same link as before. Please fix the link.

  106. mine keeps saying when i try to get the mods says we dont host our extension on the chorme store

    • Please reinstall from the link in the blog above. We are change the URL with github.

    • Anonymous

      Still not working for me. Uninstalled and reinstalled right now.

  107. Went to play with it and am being told ” This script was deleted from Greasy Fork, and due to its negative effects, it has been automatically removed from your browser.”

    Is there a new script? i deleted and reinstalled from the link in the blog above.


  108. My slither v3 mod has quit working. Tampermonkey shows it as running, but it’s not loading. All I see is the unmodded game. The mod was working great about 45 mins ago.

  109. Hello. Polish language is okay, no grammar errors or something, but i would like to help ya with the polish language 🙂
    Can I do it?
    If yes, how?

  110. Script was working great. Closed browser, then went to play 15 minutes later and script is not working. No errors reported but not doing anything. Normal (unmodified) game play and not showing modded menu at startup. Is it me or did something change?