How to Install MWLL

From MechWarrior: Living Legends Wiki
Jump to: navigation, search

The install process for Mechwarior: Living Legends (MWLL) is undergoing some rapid changes. To help developers and you, this guide will explain the process for version 0.8.6.

You may also use the reddit guide that will lead you through the installation of MWLL.

NOTE: This guide will focus only on Windows. The base Crysis Wars game was not designed to work with any other OS, although it can be run, with some success, in Linux using Wine.

Minimum System Requirements

  • CPU: Intel Pentium 4 2.8 GHz (3.2 GHz for Vista), Intel Core 2.0 GHz (2.2 GHz for Vista), AMD Athlon 2800+ (3200+ for Vista)
  • RAM: 1 GB (1.5 GB on Windows Vista)
  • Video Card: NVIDIA GeForce 6800 GT, ATI Radeon 9800 Pro (Radeon X800 Pro for Vista)
  • VRAM: 256MB of Graphics Memory
  • Storage: 10 to 15GB (new maps take additional space)
  • Sound Card: DirectX 9.0c Compatible
  • OS: Microsoft Windows XP with Service Pack 2 or Microsoft Vista
  • DirectX: DX9.0c or DX10

Note: The Action Mapper tool that is used to change keybindings uses 32-bit Java.


If you had MWLL installed previously, a clean install is recommended. Occasionally old registry values can cause problems when patching over an old install. Should you have a pre-0.8.0 build of MWLL, it is highly recommended to uninstall the old version before installing the current version of MWLL.

Download file and Patch

  1. Go to the official download page at and:
    • Download the 0.8 Installer
    • Download latest patch (0.8.6)

Note: It is recommended to use the torrent when possible, for a faster download and automated error checking. If for some reason you can't use torrent, the mirror can be used.

Extract the files


Use 7-zip or a similar utility to extract the files to a temporary location.

  • Note: Using the built in windows file manager for extraction will result in errors and ultimately will not work.

Install the files

  1. Install 0.8 by running MWLL-0.8CE+CW_setup.exe
  2. After that, if you are coming from an old install, make sure to delete the My Documents/My Games/Crysis Wars folder, as the 0.8.0 installer creates an outdated profile that can cause issues when starting the game for the first time.
  3. Patch up to 0.8.6 by running MWLL-0.8.x-to-0.8.6_installer.exe

Run for the first time

  1. Run launcher shortcut from start menu or desktop
  2. Agree to UAC dialogue if prompted
  3. When asked, enter your the in-game name you would like to use. It is highly recommended to pick your name at this stage.
  4. Click Configuration and set options as appropriate for you. You can also set or change your name here.
  5. Click 'Start MechWarrior Living Legends'

The game will often take a bit of time to load upon being run for the first time. It may also crash initially -- don't worry! Run the game again and it should load up without any issues. There will also be a box that appears very briefly on the screen and then disappears. This is also intended.

Connecting to a server

Main menu.png
  1. Select Multiplayer from the main menu
  2. Select Internet Game
  3. Once in internet Games Tab you will be shown a list of active servers. Double-click a server to connect to it.

After everything loads, you're ready to play!

It's not working! Where can I get help?

If you're having trouble getting the game to install or run, you can check the Troubleshooting page or join the MWLL Discord server using the link in the Launcher - ask for help in #tech_support or #mwll_general.

A note about profiles: if you change profiles while in-game, you will need to restart the game for the change to properly take effect.

What's Next?

If you're new to MWLL, reading the MWLL Basics Guide will help orient you with the interface and how to play the game. The other guides shown below are very useful as well, even if you played a previous version of MWLL.

Otherwise, join a game in progress and have fun!