Open Source · Modern UI · Improved UX

Severitium

Vibrant · Interactive · Memorable

Free open-source visual theme for Tanki Online. Modern animations, customization possibilities, community-driven — works on both browser and client.

Install Script GitHub Preview
About
What is
Severitium?

A comprehensive visual overhaul that transforms the Tanki Online interface — without touching gameplay mechanics.

What exactly is Severitium?
Severitium is a visual customization project that transforms the appearance of Tanki Online — a browser-based multiplayer tank game. Think of it as a "skin" that changes how the game looks without affecting gameplay mechanics.
What does it actually do?
The original game interface can feel outdated. Severitium replaces its visual elements with modern, animated designs featuring vibrant colors, smooth transitions, and improved UI components. A complete visual makeover.
How does it work technically?
The project uses CSS and JavaScript to override the game's default appearance. When installed via Tampermonkey, it automatically applies these visual changes whenever you open Tanki Online in your browser.
Who can use it and how difficult is installation?
Any Tanki Online player. No programming knowledge required — just install Tampermonkey and click the script installation link. Two steps total.
Why is this valuable from a dev perspective?
Demonstrates advanced front-end skills: CSS animations, JavaScript architecture, cross-browser compatibility, UX design, and the ability to reverse-engineer and enhance existing complex interfaces.
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Category:
Getting Started
Install in
Minutes
01.
Download Tampermonkey
Free browser extension. Available for Chrome, Firefox, Edge, Safari, Opera. No account required.
Get it
02.
Install the Script
Click install below, confirm in the Tampermonkey popup. Launch Tanki Online — done. No restart required.
Install
!
First Load Note
When first loading or updating the script, it may take a moment for the interface to fully initialize.
01.
Download Tanki Online Client
Get the desktop game client from the official Tanki Online website.
02.
Navigate to Game Directory
Usually located at %LOCALAPPDATA%\Programs\Tanki Online
03.
Backup the Resources Folder
Find the resources folder. Create a backup before proceeding.
04.
Replace app.asar
Download the modded app.asar file and replace the original in the resources folder.
Download
05.
Add the mods Folder
In the main game directory, create a folder named mods .
06.
Install severitium.client.js
Download severitium.client.js and place it inside the mods folder.
Download
Chrome 105+
Firefox 121+
Edge 105+
Safari 15.4+
Opera 91+
Support
Keep the Project
Alive

Severitium is free and open source. If it improved your game experience, consider supporting continued development.

Support on Boosty Support on Patreon
Developer Resources

Access the source code and development builds:

GitHub Repository Latest Dev Web Build
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