Pick up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling. Freeman is thrust into the unenviable role of rescuing the world from the wrong he unleashed back at Black Mesa. And a lot of people, people he cares about, are counting on him.

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Festive Map Series & Play w/ Devs & Testers Dec 16 1:30 PM EST / GMT -5
Half-Life 2

Festive Map Series & Play w/ Devs & Testers Dec 16 1:30 PM EST / GMT -5

Pirates, Vikings, & Knights II

Festive Map Series is available for download on Steam Workshop. Jingle 'yer way o'er and merrily play with PVKII Devs, Testers, and Content Creators on...

Ushering In A New Era, v3.0 Is Live!
Half-Life 2

Ushering In A New Era, v3.0 Is Live!

Zombie Panic! Source 6 comments

It has been a long road, with a lot of obstacles and trials. Zombie Panic! Source v3.0 is finally out! Our team could not have foreseen the enormous amount...

Opposing Force 2: Red Demo
Half-Life 2

Opposing Force 2: Red Demo

Opposing Force 2: Lost 4 comments

Opposing Force 2 Red Demo: 1. Forest Contact Demo 2. Subway Demo 3. City Demo 4. Hunter Demo 5. Grenadier Demo - Addon 6. Crossfire Remake (bonus) 7...

AS - Recent Developing
Half-Life 2

AS - Recent Developing

Antarctic Sciences 1 comment

We await your attention, We continue to work hards.

Reviving the Community and Prepare for v3.0 Release!
Half-Life 2

Reviving the Community and Prepare for v3.0 Release!

Zombie Panic! Source 4 comments

We hope everyone's as excited as our team is, as we're only 4 days away from the release of v3.0! We're working hard on the final polishing of the build...

AS - In Before Christmas
Half-Life 2

AS - In Before Christmas

Antarctic Sciences

Everyone is ready for Christmas and we are preparing for a surprise.

Temple Map & Workshop Update and Changelog
Half-Life 2

Temple Map & Workshop Update and Changelog

Pirates, Vikings, & Knights II

Temple upgrades, workshop changes, performance and resource updates! Server owners, please update your servers!

Episode 17 - Teaser trailer
Half-Life 2

Episode 17 - Teaser trailer

Episode 17 5 comments

First teaser trailer for big media update. Subscribe and vote for us!

AS - It's Rigorous Enactment
Half-Life 2

AS - It's Rigorous Enactment

Antarctic Sciences 2 comments

We are working hard this winter as soon as we finish the unfinished part.

Lunar Descent Released
Half-Life 2

Lunar Descent Released

Lunar Descent 8 comments

After 4 years of development I’m very happy to be able to announce that Lunar Descent is released!

Bondi & Dismemberment Progress
Half-Life 2

Bondi & Dismemberment Progress

Pirates, Vikings, & Knights II 1 comment

0.3.5.5 is essentially complete. Including tw_temple by schatzmeister, and changes to add-on manager/workshop. Check out progress on Bondi & Dismembmerent...

Lunar Descent Release Date
Half-Life 2

Lunar Descent Release Date

Lunar Descent 9 comments

After several years of development, I can announce that Lunar Descent will be released in just under a fortnight, on the 25th November this year!

Wait what?!
Half-Life 2: Episode Two

Wait what?!

Race-X

Hi this is Rogue Lambda here with a quick update about "Race-X".

What's been happening to the mod and why we need your help
Half-Life 2

What's been happening to the mod and why we need your help

Car-poral Keys 4 comments

Why is it taking so long? Who is responisble for that? Why is the sky blue? WIP stuff too.

AS Winter work in 2017
Half-Life 2

AS Winter work in 2017

Antarctic Sciences 2 comments

Halloween is over. We have a new job and thank you for watching us.

PVKII October Map Update & Changelog
Half-Life 2

PVKII October Map Update & Changelog

Pirates, Vikings, & Knights II 6 comments

Happy Halloween from the PVKII Team! October Map and Resources Update! Server owners please update your servers.

v3.0 Has A Release Date! And It’s the Biggest Update Yet
Half-Life 2

v3.0 Has A Release Date! And It’s the Biggest Update Yet

Zombie Panic! Source 16 comments

We’re happy to finally be able to announce that the v3.0 update for Zombie Panic! Source will be released on the 8th of December, this year! We've so...

Update 10/24/17
Half-Life 2

Update 10/24/17

Velocity Brawl (Proof-of-concept HL2 mod)

We have released a video and our website to announce to the world that work has really begun!

THEOS: A Chronicle of Faith Late-2017 Media Update
Half-Life 2

THEOS: A Chronicle of Faith Late-2017 Media Update

THEOS: A Chronicle of Faith 10 comments

Late-2017 update for THEOS: A Chronicle of Faith, a singleplayer Christian horror FPS built for the Source Engine (Explicit 18+ Recommended)

Dark Interval: Part I Released!
Half-Life 2

Dark Interval: Part I Released!

Dark Interval 24 comments

Part I is up! Grab the file from the Files section. Detailed instructions below.

Black Mesa: Black Ops - Release
Half-Life 2

Black Mesa: Black Ops - Release

Black Mesa: Black Ops 11 comments

Black Mesa: Black Ops - Release. By HECU TEAM (CIS).

Release of Proof-of-Concept
Half-Life 2

Release of Proof-of-Concept

Velocity Brawl (Proof-of-concept HL2 mod) 1 comment

The time has come where we have now decided to move the game to Unity and work on a scratch build. To give everyone a small taste of what we've been working...

Coming soon 08.10.17
Half-Life 2

Coming soon 08.10.17

Black Mesa: Black Ops 10 comments

Coming soon 08.10.17 - remember this date. After all, on this day we are releasing the Black Mesa: Black Ops! The first and last operation. They did not...

Update - some videos showing gameplay
Half-Life 2

Update - some videos showing gameplay

Decay: Source 1 comment

Just some updates to the mod for you to see what we have in store for you guys!

Black Mesa: Black Ops - Offiical Teaser
Half-Life 2

Black Mesa: Black Ops - Offiical Teaser

Black Mesa: Black Ops 11 comments

Black mesa: Black Ops - Offiical Teaser. By HECU TEAM.

Do not stand still
Half-Life 2

Do not stand still

Black Mesa: Black Ops 4 comments

We do not sit still, we are working on a modification!

AS - Red line story
Half-Life 2

AS - Red line story

Antarctic Sciences 4 comments

We await your attention, We continue to work hards.

Dev.blog summ(er)ary

Dev.blog summ(er)ary

News 14 comments

Why hello there! The Summer season is nearing it´s conclusion and it might be the right time to say goodbye to hot summer days with our short summary...

Half-Life 2: Aftermath - Release 1
Half-Life 2

Half-Life 2: Aftermath - Release 1

Half-Life 2: Aftermath 19 comments

In light of recent events in the Half-Life community, the release schedule for this mod was sped up significantly.

Accepting Closed Beta Applications
Half-Life 2

Accepting Closed Beta Applications

Velocity Brawl (Proof-of-concept HL2 mod) 11 comments

You can request to join the closed beta now and get access to our latest DLLs and maps.