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Maintenance mode: cslol-manager is currently in maintenance/deprecation mode. Significant new features and development have shifted to the new LTK Manager. Check out LeagueToolkit/ltk-manager for the future of League modding.

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What is cslol-manager?

cslol-manager is a powerful, native mod manager for League of Legends that allows you to easily install, manage, and create custom skins and modifications. Built with C++ and Qt for maximum performance, it provides a modern graphical interface for working with the industry-standard Fantome mod format. The manager handles the entire modding workflow - from importing mods to organizing them into profiles, to patching them live into your game client.

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Key features

High performance

Built with native C++ for speed and efficiency. Fast mod loading and processing even with large mod collections.

Fantome support

Full compatibility with the industry-standard .fantome mod format. Import and export mods with ease.

Mod creation suite

Create mods from RAW folders, pack/unpack .wad files, edit mod metadata and preview images.

Profile management

Organize your mods into different profiles for quick switching between mod configurations.

Advanced filtering

Quickly find and organize your mod collection with built-in search and filtering.

Automatic updates

Stay up to date with the latest features and patches through automatic update detection.

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System requirements

  • Operating system: Windows 10 or 11 (64-bit)
  • League of Legends: A valid game installation on Riot-operated servers
Server support: Officially supports Riot-operated servers only. Asian servers and Garena are not officially supported and may experience issues.

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How it works

cslol-manager uses a core injection module (cslol-dll.dll) to patch modifications into League of Legends at runtime. The manager:
  1. Organizes your mods in the installed/ directory
  2. Builds an overlay from enabled mods when you run the patcher
  3. Injects the overlay into the game client using live patching
  4. Monitors the game process and applies changes in real-time
Mods are stored in a structured format with metadata (META/info.json) and WAD files (WAD/ directory) that override game assets.

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Use at your own risk

This software is not endorsed by Riot Games. Use at your own risk. The developers are not responsible for any consequences of using this software.

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Next steps

Installation

Get started by installing cslol-manager on Windows 10 or 11

Quickstart guide

Learn how to install your first mod in minutes

Build docs developers (and LLMs) love

Get started for freeTalk to us