100 Half-Life 1 Mods

Already in 2001 I decided to gather Half-Life 1 singleplayer mods. I was impressed by the original game Half-Life and enjoyed Azuresheep, Case Closed, They Hunger and USS Darkstar very much. Because my internet connection was really lame (dial-up) I never managed to gather anything. I received the chance when I got access to super fast broadband internet and discovered PlanetPhillip.com (now RunThinkShootLive). That site is an amazing source for Half-Life 1 & 2 single player mods and right at that time its file server went down, To preserve data I decided to gather most promising and best rated mods and upload them to my own FTP servers. Unfortunately I was unable to provide reliable downloads through the years, and thus decided to link most of the stuff to more reliable servers (ModDB), and offer only custom packages on my own server. I hope you enjoy the mods! :)

Gameplay tips

  • Before every ride with the elevator you should save your game. There is a known bug in Half-Life that can cause you to get stuck and cannot continue.
  • If you can't jump or climb to a location try Crouch Jump. At the end of the jump, press the Crouch key. That will help you in many cases.
  • Don't rely on QuickSave and save manually. There are only two QuickSave slots available!
  • If you see some non-transparent textures (blue, black, etc) install the patch or use Steam version of Half-Life.

Mod installation instructions

After downloading any file it is recommended to verify if the download was successful:

  1. install the free HashCheck Shell Extension
  2. right click the file and select the Checksums tab
  3. compare the MD5 value from the program with the value posted on this site

You can install the mods by either extracting the archive (use free 7-Zip) in the Half-Life folder or run the installer. Default WON folder is located at C:\Sierra\Half-Life\, and the Steam version is located at C:\Program Files\Steam\SteamApps\common\Half-Life\. After installation you should make sure to restart Steam, and the mod will appear in the Uncategorized section.

Steam Half-Life mod installation

Patches for Half-Life WON release

Half-Life WON Patch

This version of the patch will upgrade your WON Half-Life version to regardless of the version you have installed. I recommend installing this patch first, because most of the mods works great with it.

Size: 82.04 MiB


Half-Life WON Patch

This is the last in the unofficial patch series. It offers many improvements of the rendering engine and bugfixes. You will need .NET Framework 2.0 and already installed patch to install it. All mods playable with should work with it.


  • Added a complete new set of Engine DLLs, featuring blue-transparency fix
  • Added Steamless Team Fortress 1.6 (v1.0_final)
  • Added Enhanced Graphics Engine (EGC v1.1), featuring bloom effect to improve realism
  • Added HLBoom protection
  • Added listenserver listing support
  • Added modserver support
  • Added WON2 Protocol won2://, to enable joining a server from a link
  • Added WON2 Updater (through 'sierraup')
  • Added Primary Masterserver selection
  • Fixed 'Blue'-transparency bug
  • Fixed SFX_T bug
  • Fixed a number of small issues with CS
  • Updated woncomm.lst with WON2 Patch for Players v2.8
  • Updated PingTool WON2 Edition

Size: 50.11 MiB


Half-Life: Ultra Definition Model Pack

This is Half-Life: Ultra Definition Model Pack by the Half-Life Improvement Team. Isnstall SD Pack first and then this package. Package contents:

  • New ultra definition models (weapons and characters)
  • New sounds (weapons, items and characters)
  • New sprites
  • Minor graphic improvements to the HUD

Size: 43.59 MiB


Modification list

Sort list by: name ascending, rating descending or length descending

Absolute Redemption takes place after the events of the original Half-Life story. Gordon Freeman freed three butterfly-like creatures called Telnorps, who served to protect Xen against the hostile Zan race from the Theldran galaxy. Te panicked Xen creatures asked the mysterious G-Man for help in finding the lost Telnorps. The first one is in the captivity of a cult in the Himalayas, the other in the amusement park, and the third in captivity of a passionate collector of unusual things, that will do everything to get the remaining two.

If you count Xen, you will fight in the game through four differently built areas and all of them are of exceptional quality. The maps are perfectly joined to form a homogenous area. They are greatly detailed and contain quite a few jumping challenges and scripted events. I really liked the non-linear design, which gives an exceptional sense of freedom, but it could confuse some players. You will occasionally have to return to the previous section, but it may contain a surprise which wasn't there before :).

As far as the enemies are concerned, there are no big changes and they are grouped by thematic sections. In the Himalayas, you will fight soldiers and ninjas, in the circus/Xen aliens, and in the warehouse the personal army of the collector. The game does not treat you as a beginner when starting, but throws you directly into the crossfire. Weapons are standard, there is enough ammo and medkits. The fights can be quite demanding, especially in sections where the map is divided into several heights or in the places where the teleporters are placed.

Visually the mod doesn't deviate significantly from the original, but there are some reskinned models available, and the gameplay is enriched by scripted sequences. There is also some really great custom speech present, and background music is also included in suitable places. To complete the game on Medium I needed about 2 hours, and I must mention here that I was greatly disappointed by the ending.

Absolute Redemption screenshot

Length:  2 hrs

Size: 34.10 MiB


Pretty short mod (when I played it for the second time I used only 40 minutes). It seems like it uses parts of maps from other mods or from the original Half-Life. Weapons, ammo and health kits are nicely distributed, but there are too many for the normal difficulty - I recommend playing on Hard. The story is set in Black Mesa research facility, therefore you will encounter known enemies. There could be some surprises when a enemy is well placed, but there is nothing to be to excited about in this mod. Well, you could loose some time when searching for hidden buttons ;)

Length:  40 mins

Size: 6.54 MiB


In the Afraid of the Monsters Director's Cut mod, you play David Leatherhoff, who has been having nightmare troubles for some time. A solution seems to be present in form of mysterious pills, which he receives regularly from an unknown source, but they are highly addictive. David decides to visit a nearby hospital to get cured, but there the nightmare really starts. The story is quite interesting and it's commendable that the game has multiple endings.

If you ever played a game from the Silent Hill series, then you will quickly notice a number of parallels between the games. First of all, there is the similar design of stages which take place inside buildings, in the city and on the outskirts. The way forward is blocked by many doors, which are often blocked from one side, locked by keys or by a remote switch. The keys are relatively easy to find, but the last method of locking is quite annoying, since the switches are often located far away from the door, and from the video sequence, it is often not possible to remember which door was activated. Although the house levels are fairly easy to navigate because of the rectangular layout of the elements, others are not, especially in the darkness. The game is mostly annoyingly dark, and it's made worse by the flashlight that needs batteries to operate. If there were maps on the walls as in Silent Hill, the gameplay would have been much better.

The dark nature of the levels could mean that the authors could go crazy when setting up the enemies, but fortunately they got the numbers just right. Interestingly, most scares were produced by the enemies who were placed in maps with enough light ... In addition to super fast zombies, you will be attacked by other types of crooked monsters, among which the most prominent are the skulls with hands in their mouths, and some kind of giant spiders. Often their occurrence is tied to certain events, so watch your back :). Some of the enemies are partially or completely invisible, which was quite annoying. To combat them you can use several types of close range weapons, pistols, a shotgun, a machinegun/uzi or a revolver, but there are no explosives. You can only carry one weapon type at a time and the other is automatically discarded on pickup. Ammunition is ample for precise shooters (aim for the head), and there is even more to find if you are good at exploring.

Since this is a total conversion, the authors did not only change models, but also the map textures that fit very well into the theme of the game. Custom sounds and music backgrounds are also present. You will need around 4 hours to complete the mod on Easy difficulty.

Afraid of Monsters Director's Cut screenshot

Length:  4 hrs

Size: 247.48 MiB


Assault on Roswell takes place in Roswell somewhere in the US. You are playing a British secret agent sent to the base to investigate the outbreak of a mysterious virus, which may even be of extraterrestrial origin. In order to increase the effectiveness of infiltration, our character is disguised as gorden (this is what the text says, lol :) and even undergoes plastic surgery.

The level design is one of the key weak points of this mod. The maps (especially at the beginning) consist of simple and almost empty rectangular boxes that are connected with long and boring corridors or shafts. In addition to the dull emptiness, the impression is mad worse by the monotone textures on the walls, and design mistakes. Occasionally, you may get stuck without the possibility of a return, so save regularly. The quality of the created levels increases with the time, so the ending levels are pretty decent. The way forward is occasionally well hidden, but in many cases you will need to activate a switch somewhere and return a long way back - very annoying. Maps also contain secrets and traps.

On the way to the end you will encounter opponents already known from the original, which are well placed in some places and represent an interesting challenge, but in other cases the authors have exaggerated their numbers a bit. The weapon list has not undergone significant changes, but the way you get them differs from other modifications. You will have to find them in the level, otherwise you might have to do a long walk back. Ammunition and healing packages are just right, but they are found in unusual fragile objects such as, for example, boxes that look like explosive charges.

The appearance of the game progressively improves during play, but it is never pretty. The elements are mostly placed without some sense of aesthetics, the height and size ratios are wrong, everything is made very crude. Occasionally the music background is switched on, but the moments are not always appropriate. On the Medium difficulty, I finished the game in about 2 hours.

Assault on Roswell screenshot

Length:  2 hrs

Size: 6.98 MiB


In Azure Sheep, you play Barney, a security guard at the Black Mesa complex, which happens to have same name as the hero from the Blue-Shift expansion. Just another day at work quickly turns into a nightmare after monsters from Xen invade the complex. In order to save his girlfriend, Kate, Barney ventures deep into the heart of the Black Mesa lab complex. The Azure Sheep and original Half-Life Stories are perfectly intertwined, so you are able to meet with Gordon Freeman even help him progress. The mod's story is spiced up by video sequences, and quite a few scripted events.

The level design is good and is almost as diverse as the original, but some labyrinths of corridors with numerous locked doors are really a letdown. There are quite a few alternative routes to reach the goal, which will allow you to try a different advancement approach. The enemies are well placed, and there are quite a few ambushes and shocking moments. Classic enemies from the original were expanded by modified and brand new ones, but there is also quite few new allies. Kate stands out from the crowd, because she is crucial for advancement (she opens some security doors), therefore you must take great care to protect her (and get angry when she does not want to pass through the door :). Arsenal was also expanded with new weapons and a portable medkit, which you can use to treat Kate. Although the fights are quite demanding, there were enough bullets and healing packages that I did not have any problems. Sometimes, you also need to mount a machine gun or rocket launcher, but at the same time this means that you have to be a good shooter, as a lot of opponents will storm you.

In addition to custom models and speakers for them (very commendable!), the game also has a custom colored HUD. The color can sometimes be very problematic as you can't distinguish it from the surroundings. The game is about 4 hours long and offers a very diverse gaming experience, I recommend playing on medium.

Azure Sheep screenshot

Length:  4 hrs

Size: 40.52 MiB



Size: 2.86 MiB



Size: 6.63 MiB


Before is a very short mod, on a ship map. It has some high-res models, Spirit of Half-Life and lots of effects(rain, etc.) so the framerate is very low. The background music is very nice and makes the game more interesting. Through the game you kill some aliens and soldiers and move some crates. The ending fight is easy and buggy.

Length:  20 mins

Size: 50.45 MiB


In the Black Ops mod, you play a special force soldier named Declan Walker, whose task is to find and eliminate a runaway scientist called Dr. Gallagher. The latter has stolen a mysterious suitcase from Black Mesa, which the government wants to recover in every way possible. The story sounds interesting, but it has some faults. It's revealed through comics that strongly resemble those of Max Payne, and there are also a lot of levels and scripted events that players of Max Payne will immediately recognize.

The similarity is not only limited to Max Payne, but also Half-Life 2. Maps are full of detail and very aesthetically made, the paths are often not obvious, and there are some jumping challenges. Occasionally you will encounter a locked door that you will need to unlock with a card, key, or security code. You will be able to get the latter by reading it from a computer or a piece of paper. Some puzzles will also require you to find a missing piece of some device, or explosives to blow up a wall. Enemies are often positioned at different height levels, which can make some situations pretty difficult.

During the game, you will mostly fight against soldiers and turrets, here and there you will be harassed by Headcrabs, zombies, and Alien Slaves. Other Xen creatures are not really newsworthy. With the exception of the silenced pistol, your arsenal has not received any changes, with the exception being removal of biological weapons. There is definitely too much ammunition, and the same applies to healing packages and armor. You can find even more stuff by exploring, as there are a lot of hidden places with goodies in the game.

The visuals are very nice, not only because of detailed maps, but also because of detailed textures (khm, khm, posters don't count :P). The experience is also enriched by scripted events and music that turns on at the right moments. Unfortunately, the comics are cut off at widescreen resolutions. Due to the relatively low difficulty, I recommend that you play on Hard which will provide you with approximately 2 hours and a half of gameplay.

Black Ops screenshot

Length:  2 hrs 30 mins

Size: 42.69 MiB


Bloodbath begins unusually, during playing it becomes clear its far from being yet another mod. There are some nice fights, new enemies and guns, that are faster than usual ones. The game has also some riddles and jump-skill challenges. It's a interesting mod, but really short.

Length:  50 mins

Size: 10.14 MiB


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