X-Half-Life: Deathmatch (XDM) is an Unreal Tournament-style Half-Life modification.


XDM features:

  • Classic Deathmatch (free for all)
  • Team Deathmatch (up to 4 teams)
  • Capture The Flag (2 teams)
  • Domination (up to 4 teams)
  • Last Man Standing (UT-style)
  • Co-Operative (monster DM, mission and other modes)
  • Singleplayer (possible to play any map pack)
  • Revenge modes (in all game types)

Also featuring old and new weapons, new high-quality maps, new hi-def models, flexible network code*, lots of special effects with no hi-end hardware requirements. XDM offers full set of customization options: HUD/GUI colours, chat, team names and colours, weapon slots, translatable string. All original Half-Life maps, models and sprites are compatible with this mod, even some single-player mods like Timeline 2: Iced Earth (which don't have teir own DLLs) or even Arctic Incident (now included since v.3038) are playable. Improved entity management system allows massive online matches (32 players) with tons of weapons, boxes, rockets, monsters, explosions and other stuff flying around. The mod includes optional botmatch mode with up to 31 angry HPB bots (experimental).
Don't underestimate the power of GoldSource!

This mod has been developing since 2000 (first public testing was in 2001) and lives even now!! :)
More info, help and additional downloads on official site and forum:

>) Official site: x.netheaven.ru (currently offline)
>) Official site: Screenshots
>) Official forum (international)
>) Forum on HLFX.ru (russian/english)

>) YoyTube videos Playlist (not much there, really)

XHL/XDM is a great modding platform (like SoHL), not only for singleplayer, but for all game types. Check out videos to see some of the features.

«In the end, I just wanted to make Half-Life better.» - ~X~

◊ Also recommended for playing (friendly projects):
G-man Invasion (finished)
Half-Life: Weapon Edition (discontinued)
Half-Life: Tyrian (based on XDM3036 code)

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X-Half-Life: Deathmatch

a half-life modification
X-Half-Life main logo


Source code and SDK released!

XDM3038 Title

XDM is a classic UT-style all-in-one Half-Life modification which is known by its weapons, game rules, maps and special effects. Last release (3038) included dedicated single/co-operative mission. Change log was so large I didn't risk citing it in the article.


Since XDM is an opensource project, many people want to use it as a platform for their own mods. And they have good reasons to do so! :) After release of the game itself, the SDK release was deliberately delayed to collect and fix as many problems as possible. Now it's time to release the Software Development Kit (SDK) and code to the public!


The SDK package includes documentation, sources of maps, models, textures, sprites, user interface templates, even soundtrack in ImpulseTracker format! Lots of tools included. Map compiler (VHLT) 32 and 64-bit versions. Model compiler with texture transparency support. Direct BMP to SPR converter.
This SDK will be useful not only for XDM modders, but generally for all Half-Life modders.

SDK can be downloaded here:

X-Half-Life Deathmatch SDK

Source code is available separately here:

X-Half-Life Deathmatch Source Code

It has been updated a little since the release of XDM 3038 because release was made in a hurry and just had to have some errors. :) There are updated binaries (DLLs) there. The installer is protected against unauthorized use, instructions inside.

Fixed since last release:

  • Ammo, items, weapons were not respawning correctly when mp_defaultitems is empty.
  • Important/quest items were removed when player was disintegrated, telefragged or disconnected.
  • Weapon box counted weapons even if they were not unpacked to player.
  • Weapon box now does not store ammo names, only indexes - solves string reallocation problem.
  • Ammo of exhaustible weapons was added while weapons were not.
  • Ammo types are now saved with game and merged when ammotypes.txt is changed. (Untested)
  • Some effects were not drawn parallel to surfaces as intended (SQB).
  • RPG rocket wrong angles and taret loss (SQB).
  • Bots angles (pitch) when aiming or following (SQB).
  • "too many particles" error hidden to level 3
  • "GetNextBestItem(%d) == WEAPON_NONE!" warning that was caused by bad weapon status on server.
  • Entities no longer respawn after being deleted by action command.
  • Award name localization in statistics window.
  • Some projectiles now produce sound when colliding with water.
  • trigger_teleport endless loop when target is changed externally.
  • env_flamespawner created clouds with yellow particles for no reason.
  • gibs placed with "body" < 0 would disappear.

PS: SDK two days after the rise of Ryzen? Coincidence? :D

X-Half-Life/XDM release after two years!

X-Half-Life/XDM release after two years!

News 7 comments

XDM is an advanced open-source Half-Life modification which features many game types such as DM, TDM, CTF, LMS and CoOp, good load of weapons, beautiful...

XDM development update: flames of fire!

XDM development update: flames of fire!


Weekly update of development progress on upcoming XDM version

//XDM3038 c: FIX after testing

//XDM3038 c: FIX after testing

News 3 comments

An update on results of playtesting and what's delaying the release.

XDM Last hours of testing: download now!

XDM Last hours of testing: download now!

News 5 comments

Bug hunt is close to the end: can release happen tomorrow or we don't get past another fatal error?

Add file RSS Files
X-Half-Life Deathmatch Source Code

X-Half-Life Deathmatch Source Code

Source Code 5 comments

X-Half-Life Deathmatch Source Code package (updated after release)

X-Half-Life Deathmatch SDK

X-Half-Life Deathmatch SDK

SDK 13 comments

X-Half-Life Deathmatch Software Development Kit (SDK) (does not include source code)

X-Half-Life Deathmatch GNU/Linux binaries

X-Half-Life Deathmatch GNU/Linux binaries


X-Half-Life: Deathmatch (XDM) version release. Linux server + client. Binaries only, no resources.

X-Half-Life Deathmatch

X-Half-Life Deathmatch

Full Version 5 comments

X-Half-Life: Deathmatch (XDM) version release. Win32 server + client + botmatch. Fully portable offline installer.



Demo 10 comments

>>> X-Half-Life Deathmatch v3.0.3.8 ALPHA GHOUL [BB] edition <<< FILE UPDATED 28.11.2016

X-Half-Life Deathmatch

X-Half-Life Deathmatch

Full Version 35 comments

X-Half-Life: Deathmatch (XDM) version release 20140202 Win32 server + client + botmatch

Comments  (0 - 10 of 281)

What password for Source code please?

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~X~ Creator

It's part of the game, can't tell you. :)

Reply Good karma+1 vote

What map please?

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~X~ Creator

Last map, "End".

Reply Good karma+1 vote

Hey, I have something wrong in such

When I type give weapon_crowbar, I get:

Error! DispatchTouch() called for removed pentTouched weapon_crowbar

And I type give monster_barney and monster_scientist, I get it too

Error! DispatchAbsBox() called for removed entity

And no crowbar in game

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~X~ Creator

These errors are somewhat normal. Engine just calls these functions as it was normal.
To have crowbar by default in multiplayer, use mp_defaultitems. To get it right away you may use "make", "give" or "giveall", but with sv_cheats.
To add barney, use "make" command or the GUI creation functions and NOT "give" because it only adds items to inventory and blocks/destroys everything that wasn't added.

Reply Good karma+1 vote

mm.. is possible to jump with Gauss Gun like in half life ? I try but ammunition end immediately so I can't jump
Is possible also to use bunnyhop script ? How ? I insert //bunnyjump script into /XDM/autoexec.cfg but nothing change

This is very good but why don't include also modded crossfire or stalkx versions ? Should be amazing but gauss jump is really needed, boss.

Thanks in advance

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~X~ Creator

Hi! Gauss jump should be possible just like in HL and can be tuned on server. Quoting:

if (!IsMultiplayer() || mp_allowgaussjump.value <= 0)
m_pPlayer->pev->velocity -= gpGlobals->v_forward * (flDamage * 2.0f);
m_pPlayer->pev->velocity -= gpGlobals->v_forward * (flDamage * sv_tau_velocity_mult.value);

Bunnyhopping was considered cheat/bug and, if I remember correctly, was oficially fixed in HL SDK.

Reply Good karma+1 vote

No servers :(

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~X~ Creator

Because no admins :(

Reply Good karma+2 votes
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Ratings closed.

Highest Rated (5 agree) 10/10

personal favorite half life mod

Feb 9 2014 by Executor-64-

Lowest Rated (8 agree) 1/10

Full of memeshit, broken bots, riddled with bugs, ugly textures and models, terrible music. Don't waste your time.

Apr 16 2014 by Re1nhardt

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