Half-Life: Dreamcast is a PC port of the unreleased Sega Dreamcast console version of Half-Life developed by Gearbox Software originally slated for release in late 2000. The Dreamcast version possesses many unique differences compared to the original PC game and Gearbox's later PlayStation 2 port, including modified levels, exclusive NPC models and props not seen anywhere else, adjusted difficulty, and a host of sly Dreamcast references hidden throughout, making it a worthwhile curiosity that any true Half-Life fan would want check out. This PC port allows the game to run as a Half-Life mod on Steam.

Prepare to run, think, shoot, and live once again in the Dreamcast experience you've never experienced!

Mod Features:
• Different Maps - The map alterations range from minor geometry fixes and lighting adjustments to entirely revamped areas. Several locations have been redesigned with performance and gameplay in mind while entirely new rooms have been added in some places to introduce another obstacle or puzzle to overcome. One entire level was even cut! Can you determine the missing map?
• Different Models - The Dreamcast version is host to a number of exclusive models not seen in any other version of Half-Life, including the High Definition pack and the PlayStation 2 port. Can you find the hidden VMU and Half-Life Dreamcast disc?
• Revamped Menu - Included is a new splash screen, menu background, menu color scheme, and menu sounds to closely emulate the Dreamcast's fancy interface.
• High quality soundtrack - Emulates the CD quality music used in the console version, overriding the default 48kbps mp3s on Steam.
• Tweaked Difficulty - To accommodate the difficulty of playing with a controller, Gearbox suitably rebalanced the monster spawns as well as enemy health and damage values.
• Password Notifications - Although the password system itself cannot be ported, all password messages that appear in normal gameplay have been brought over.
• The Little Differences - Too small to be noted in a bullet point, but true Half-life fans should be able to spot these in a heartbeat when they see (or hear!) them.

Original Developers:
Valve Software - Developing Half-Life
Gearbox Software - Developing the console port
Joachim Barrum - Half-Life GamePro cover illustration

PC Port Mod Team:
Revenant100 aka Marphy Black - Porting, copy+pasting
Barnz - Feedback, technical support, historical research
Besli - Master of the model archive

Video Trailer Mirror on YouTube:

Image RSS Feed Screens
Player Scientists At Work Islave
RSS Feed Articles

In light of the new Linux, Mac, and SteamPipe additions made to Half-Life on Steam, a required update was made necessary for the mod. Hence, version 1.1 of Half-Life: Dreamcast is now available to add full compatibility with the recent Steam changes. Due to the nature of this update, a single patch is not possible. Be sure to delete the previous version of the mod before installing 1.1!

Head to the download section now or simply click the link below:

Half-Life: Dreamcast v1.1

Be sure you have Half-Life on Steam installed!

If you encounter issues such as scripted sequences not working, chances are your saved games from the base Half-Life game are conflicting with the HL: DC mod. This can occur even if you don't load these saved games. To address this problem, go to your Half-Life save game directory ( C:\Program Files (x86)\Steam\steamapps\ [SteamName]\half-life\valve\SAVE ) and either delete all files you find there or temporarily move them to a different folder. You may need to disable Steam Cloud synchronization for Half-Life to prevent Steam from automatically redownloading the saved games.

Half-Life: Dreamcast released!

Half-Life: Dreamcast released!

3 years ago News 26 comments Report

The PC port of the ill-fated console version is now available to download!

Half-Life: Dreamcast is a PC port of the unreleased Sega Dreamcast console version of Half-Life.
RSS Feed Downloads
Half-Life: Dreamcast v1.1

Half-Life: Dreamcast v1.1

2 years ago Full Version 11 comments

Updated version 1.1 release of Half-Life: Dreamcast, a PC port of the unreleased Sega Dreamcast console version of Half-Life. Requires Half-Life on Steam...

Half-Life: Dreamcast v1.0

Half-Life: Dreamcast v1.0

3 years ago Full Version 17 comments

The first public release of Half-Life: Dreamcast, a PC port of the unreleased Sega Dreamcast console version of Half-Life. Requires Half-Life on Steam.

Post comment Comments  (20 - 30 of 90)
SingleMom Oct 24 2012 says:

Does this come with Blue Shift?

+1 vote     reply to comment
Yethiel Feb 9 2013 replied:


+1 vote     reply to comment
SoundoftheLyre Oct 7 2012 says:

I'm glad someone finally did this, kudos to you.

+2 votes     reply to comment
Dylan` Mar 26 2012 says:

Thanks for the help. i was able to play through the entire game the other day and right now I'm playing through the PS2 version of the game but I've noticed that almost everything that is new or different in this mod is also featured in the PS2 version. I have only played through about 2/3 of the PS2 version and all "added or altered" puzzles are still present so I was wondering what exactly about this is different from the PS2 version besides the obvious things such as models and difficulty? It just seems that gearbox recycled all of the new content rather than keeping it a DC exclusive. Correct me if I'm wrong.

+2 votes     reply to comment
Revenant100 Creator
Revenant100 Mar 27 2012 replied:

The enhanced models in the PS2 port are massively, massively different over anything in the Dreamcast version and even the PC HD Pack. These new models allow NPCs to have complete facial animations, individually animated fingers, full flowing lab coats on scientists, and so much more.

Additionally, the maps in the PS2 port are modified even further over the Dreamcast version, including the addition of upgraded textures and the replacement of brush-based objects with actual animated models such as the health and HEV chargers. The NPCs in the PS2 port also sport unique AI behavior such as human grunts being able to kick or throw grenades back at you and roll away from danger instead of ducking in place.

+5 votes   reply to comment
SiPlus Feb 19 2012 buried:


I like the ported improvements to the levels, but placing Dreamcast logo everywhere and changing the key hints in the Hazard Course is stupid. Feels more like an emulator than a mod.

-11 votes     reply to comment
Revenant100 Creator
Revenant100 Feb 20 2012 replied:

I didn’t change the key hints in the Hazard Course. That’s how they’re actually displayed in the Dreamcast version. Since I was porting the DC port, it was of course appropriate to bring over the titles.txt alterations as well. At least, I can’t imagine why I would deliberately exclude them as doing so would make the port less accurate.

I also double checked my files to count the number of Dreamcast logos I included and I could only find two: the game icon in the Steam library browser and the corner window icon at the main menu (replaces the Steam icon).

+5 votes   reply to comment
Dylan` Feb 19 2012 says:

Hey. Can anyone help me sort out the problem I've been getting which is making this completely unplayable. On the rail in the very beginning, there is a part where a hatch opens and the rail is lowered down right after a loading screen. The game seems to not even lower it down at all and leaves me stranded there with nothing to do but quit the game. Is there a work around this?

+2 votes     reply to comment
Revenant100 Creator
Revenant100 Feb 20 2012 replied:

That scripted sequence not working is a symptom of the save game issue. Basically, from what I've determined with the reports given to me, it seems save games from the base Half-Life game game are conflicting with the HL: DC mod even if you don't load them. Follow these steps to fix it: Go to your Half-Life save game directory ( C:\Program Files (x86)\Steam\steamapps\ [SteamName]\half-life\valve\SAVE ) and either delete all files you find there or temporarily move them to a different folder.

+2 votes   reply to comment
0ddz Feb 11 2012 says:

No multiplayer?

+2 votes     reply to comment
Shining.Wing Feb 12 2012 replied:

The Dreamcast version had no multiplayer.

+2 votes     reply to comment
0ddz Feb 12 2012 replied:


+3 votes     reply to comment
Revenant100 Creator
Revenant100 Feb 13 2012 replied:

Multiplayer was omitted as it was in the actual Dreamcast game. However, I left in the normally inaccessible ported multiplayer maps, including dm_office, for anyone who was curious to try them. If you want to play dm_office on-line, you can just copy the level to the normal Half-Life maps directory since it does work there.

+3 votes   reply to comment
RedFog Mar 30 2012 replied:

dm_office was based on office complex, right?

+3 votes     reply to comment
Post a Comment
click to sign in

You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.

2000 characters limit; HTML formatting and smileys are not supported - text only

Half-Life Icon
Developed By
Send Message
Release Date
Released 2012
Mod Watch
Track this mod
Community Rating



72 votes submitted.

You Say


Ratings closed.

Highest Rated (4 agree) 10/10

i always wondered what the dreamcast version of half life would look like

Nice mod

Jan 15 2012 by ThatMercenarySnake

First Person Shooter
Single Player
Embed Buttons

Promote Half-Life: Dreamcast on your homepage or blog by selecting a button and using the embed code provided (more).

Half-Life: Dreamcast Half-Life: Dreamcast
Half-Life: Dreamcast
Last Update
2 years ago
274 members