Vlither is a client for Slither.io which can run outside the browser. It is written in C and uses Vulkan for rendering all the graphics, resulting in faster rendering. This implementation is based on protocol version 19, which was the latest version in January 2026. It has been tested on Windows 11, Debian 13, Ubuntu 24.04, and LMDE7 (AMD and Intel).
No dependencies are required to run the program. If your GPU supports at least Vulkan 1.0, you're good to go. Download the latest release.
Prerequisites
- Premake for generating makefiles
- Vulkan SDK
- Python 3
- GCC
- mingw-w64 (if targetting Windows)
- GDB if you plan to debug
- CompileDB for intellisense
- Make
- X11 dependencies (only for Linux, see here)
For simplicity, building is only supported on Linux.
Make sure the VULKAN_SDK environment variable is set (and acquire vulkan-1.lib and place it in VULKAN_SDK/lib if targetting Windows).
git clone https://github.com/for-loop9/vlither.git
cd vlither
python3 build.py 0 1
python3 build.pyYou may also work on the project with VS Code by opening the .code-workspace file. Make sure you have the required extensions installed:
- Upscaled/sharper textures
- Supports all 66 skins
- Custom skin
- Server selection
- Zoom
- Kill count
This project is licensed under the GNU General Public License v3.0 - see the LICENSE file for details.
All game assets, artwork, trademarks, and game content are the property of Slither.io.
This project does not claim ownership over any game-related intellectual property. This application is provided for convenience and performance purposes only and is not affiliated with or endorsed by the original game developers.