Half-Life Deathmatch: Source

This page details bugs of Half-Life Deathmatch: Source.

This page documents bugs found in Half-Life Deathmatch: Source only.
For bugs found specifically in Half-Life: Source, please visit its page.

This page is rather stubbly and could use some expansion.
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This game is just as buggy, if not, even buggier than Half-Life: Source. This page would make for a good start but remember to not copy-paste everything from there.
Make sure to verify if something is an actual bug and not a change/difference from the Original.

Much like its singleplayer cousin, Half-Life Deathmatch: Source has become plagued with bugs and glitches thanks to engine updates. Not nearly as infamous as Half-Life: Source but arguably much worse. Most if not nearly all of that game's bugs are also seen here.

General#

A bug since SteamPipe, the playermodel selection menu doesn't save your chosen model and will always default to the Gordon playermodel. A similar thing also happens with the spray selection. This was a bug also seen in Half-Life 2: Deathmatch from around the same time, but it was finally fixed in the 20th anniversary update. The only way around this is using the 'cl_playermodel models/.mdl' command. This was actually fixed when the game was ported to 64-bit and moved to the new Team Fortress 2 engine branch (along with Half-Life 2: Deathmatch, Counter-Strike: Source, Day of Defeat: Source and Team Fortress 2) in 2025 and it inherited some of the fixes that were added to the base engine branch.
Teamplay is unable to be selected from the "Create Server" menu.

HUD#

The ammo meter bar in the weapon selection HUD from the original game, is always colored red when it should display green like in the original game.

HUD showing the weapons that have full ammo but on red.

Ragdolls#

The ragdolls for dead players will freeze in place instead of actually acting like ragdolls.

Entity Duplication#

An infamous glitch exists in Half-Life Deathmatch Source where all entities on the maps are duplicated, including weapon and item pickups. This can result in some very odd behaviors, including but not limited to:

Breakable glass requiring 2 hits to be broken.

Getting more health, suit batteries and ammo than usual with item pickups.
The water gates on Undertow will not be opened after the water trap is used.
Mounted guns are rendered near-unusable in any map that uses them.
Both fans in Snarkpit are broken and cannot push the player anymore.
The train in Subtransit is duplicated and can be unstable, with a high change of killing the player if they get stuck in between the clipping trains.
There's a duplicated decorative fan in Lamba Bunker that doesn't do anything while the other one spins.
Elevators in Crossfire have a floating metal grate with no collision directly above the actual platform.
The hidden entrance to the 'blue room' in Crossfire has to be opened twice in order to walk through.

Maps#

A second after that map Subtransit loads, all tripmines in the map self-detonate.
The button that activates the infamous airstrike on Crossfire can be pressed multiple times, causing multiple airstrikes to happen at once.
The white-out effect as the bomb drops in Crossfire plays in reverse.
The gaps in the roof of the main building in the same map is permanently closed off instead of only being closed during the bomb drop.

Weapons#

The .357 Magnum's viewmodel has no laser sight attached to it, despite the zoom function being active, and the model having a visable scope attached to the viewmodel in the original game's multiplayer.
The Shotgun uses the single-shot sound for the double-shot alternate fire and its pump sound is out of sync.
The SMG and Pistol don't have separate damage values.

Sounds#

For some reason, when the crowbar hits an certain entities like doors, ladders, health and suit chargers, weapons, items and ammo, it always makes a flesh hitting sound. Apart from that, the metal hitting sound bug is also here and will occur on everything else in the maps.