I am the developer or Agariomods. When I saw this game I thought it was fun, so I decided to try and mod the game to see what I could do. Currently, I’ve added more skin patterns and background themes. You can get the script at
Make sure you disable any other slither.io extension and scripts first!
How to install user scripts?
Firefox and related browsers: Greasemonkey.
Google Chrome, Chromium, and related browsers: Tampermonkey.
Opera (version 15 and later): Tampermonkey or Violentmonkey.
Opera version 12 and earlier supports user scripts natively. Violentmonkey provides a friendlier UI and better compatibility.