LIERO official website

We have three options for you. They are the same in terms of gameplay, but each one has its own special features. You may pick whichever one you like! All three are awesome!

Liero 1.33

Concieved and created in 1998 Liero became one of the cornerstones of pixelated gaming. Between 1999 and 2005 the thriving Liero community created astounding maps, mods and editors to enhance the experience. Suffering from technical limitations, Liero fell from popularity over time. It is now a legendary game among the internet veterans.

  • Maximum nostalgia
  • Some bugs
  • Needs Win98 or older to run
  • No network play


Liero 1.36

Originating in the one of the many cloning projects, OpenLiero surfaced in 2007, patching the original Liero limitations. 100% true to the original gameplay these are the first new official versions of Liero since 1999. Several known bugs are fixed, a several modernising features such as replay recording are added.

  • Perfect clone of 1.33
  • Bugs fixed
  • New features
  • Works on almost any OS
  • No network play

Download Source code


A project to liberate Liero from all its proprietary components and to allow it to be distributed completely freely. “lierolibre” is a fork of Liero 1.35b, and features a new nonproprietary sound pack. It sounds a bit funky but plays exactly the same way. Perfect for Richard Stallman and the likes of him. It is also easier to mod.

  • True to original gameplay
  • Different sound pack
  • No proprietary content
  • Works on almost any OS
  • No network play

Download Source code


Maps, mods, and more stuff

Liero Hell Hole,
Great archive of Liero levels, mods, TCs, editors and other things.
Liga Liero,
The experts resource of Liero content (in polish).
The official Liero guide by Durandal
Liero information on Wikipedia.
The old Lieroextreme website
Bearer of the name before the clones took it.

About the game

Liero is a simple game. Pick your five weapons, and unleash your inner fury. The game is always played one versus one on a map of your choice, and yes, you have to play with someone who is right next to you.

To shoot is of course easy enough to figure out, but if you want to step up your game, you need to figure out things like how to swing yourself to safety with the ninja rope, to use timed weapons for area denial, to hunt without being hunted, to ambush, hit and run, and control that darn guided missile.

If you can do all these things, you may one day become a true champion, as the players in this video attempt. (Note the video is recorded in spectator mode, a modified version of Liero by Chucky.)

Frequently asked questions

How do I install Liero?

Unzip the game into a folder, and run it.

How do I install new maps?

Drop them in the same folder as the game.

Liero 1.33 doesnt run, why?

Disable sounds by adding /n to the command line when starting the game.

Click here for further instructions.

  1. Right click Liero.exe and select "Create shortcut"
  2. Right click the created shortcut and select "Properties"
  3. Go to the tab titled Program and place the cursor at the end of the line
  4. Add /n at the end, after LIERO.EXE
  5. Press OK and run Liero via the shortcut
Liero 1.36 has the same problem, why?

You need to run OpenLiero.exe instead of Liero.exe.

How do I change the game window size in Liero 1.36 and lierolibre?

Hit F5 and F6 for full screen and 2x size, or use the menus.

How do I record replays?

In lierolibre, F1 to access the "secret menu". Liero 1.36 has this feature in the menus.

A brief history of Liero

Liero was originally a clone of MoleZ, a similar under ground shooter game featuring moles instead of worms. It was also originally ment to be a top-down-view game. The game was first published in the finnish mbit computer game magazine, all the way back in 1998. It quickly became popular and even won some “game of the week” awards. Not long after it began spreading beyond the borders of Finland.

In 1999, Joosa became “fed up” with game development, and the contstant stream of feedback to handle. Development stopped in January 2000 at the final version 1.33. By this time multiple fan sites for Liero had popped up on the internet. The one which was to become the foundation of the community was "Wormhole - The Ultimate Liero Level Editor". The site had some of the first and fanciest Liero editors to be had. The Liero Blood Increaser could set the blood rate of Liero all the way up to 32750%, The Liero Graphic Editor would let you edit the apperance of the worms, and the projectiles, and of course, Wormhole, the level editor would let you convert BMP files into Liero levels. The community boomed.

In the following years the community moved off the guestbooks and message boards and into the new heart of the community. The LieroNet Forum. Several new editors saw the light of day. The most ground breaking were LieroKit and LieroHacker by Gliptic (Erik Lindroos). This new generation of editor went much deeper into the Liero game files, and allowed editing weapons, changing the palettes, and alteration of the physics.

Simultaneously a somewhat separate community evolved in southern Poland, grounded in the clan “Liga Liero”. The polish community quickly outgrew the international community, but due to the language barrier its strength never truly carried over into the wider world.

The next generation

The next step was the development of the first working clones of the game. The most notable were Wurmz! by Patrys, LOSP by Gliptic, LieroX by JasonB and Gusanos by Basara (not to forget, NiL which was the earliest clone, and the first Liero for Linux). All these projects took the game in new directions. Most of them highly moddable, some with multiplayer features. It is also worth mentioning that inumerable attempts to build other clones were started - and abandoned, including 3D clones, Wii versions and anything you can think of.

Out of these, LOSP is the one which developed into OpenLiero, which in 2007 was renamed “the official new version of Liero” when released as Liero 1.34, and more recently updated to 1.36. Unlike the other clones, OpenLiero is ment to be an exact simulation of the original Liero and still requires the original game files present in order to run. The idea behind it is to preserve the original game feeling, and to allow the game to run properly on more modern systems, including other platforms. The notable differences included in this new version is that some bugs were fixed, such as the notorious game freezes (when the map did not have enough rock on it), the ninja rope bug (where the rope hook would suddenly shift to the lower right corner) and some other minor issues. After some deliberation, new game options were added, but in order to preserve originality, they were hidden away under the F1 key. Most notable was the replay recording feature.

In 2011 Joosa was approached by arand (Martin Erik Werner) with questions about licencing. It turned out he was making yet another clone, this time based on the OpenLiero source code. The goal was to remove all proprietary content from the game so that it could be included in Linux packages. In 2012 the game was released which is why as of 2013 features three versions of the game, so as to give the avid Liero enthusiast complete freedom of choice.

As for the community, one can safely say it is dead, although with some smaller communities popping up here and there from time to time. Most of the old community content created between 2000 and 2005 can still be found through way-back-machines, Google searches and not-yet-dead links on the Liero sites you may come across. The best still alive sites are presented above in the resource section.

If you have questions, you may seek expert advice in or the Liga Liero forums.

Have a great time playing Liero!