This is the HL2-Mods category

Half-Life 2 mods. These are generally installed by copying a folder to your SourceMods folder, within your Steam Installation. These mods can not use MapTap.

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Rebellion

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

In Rebellion, you play as Mandella, colonel in the Confederation, a powerful military force. At the beginning, you explore the mothership as you’re asked by admiral Spade to attend your briefing.

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Total Downloads: 3,3386th January 2009
73 Comments and 19 recommendations, most really enjoyed it!

Deal With Destiny

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

The pack contains Black Mesa style environments, outdoor areas, driving sections and plenty of action. Without giving away any spoilers, the last map contains an innovative use of a trainyard.

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Total Downloads: 3,4342nd January 2009
45 Comments and 20 recommendations with no significant bias

Stay Alive

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

A simple survival mod with more Zombies that you can count! Simple level design, simple objective and simply fun (assuming you like simple zombie mods!)

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Total Downloads: 1,35029th December 2008
7 Comments and 4 recommendations with no significant bias

HMS Defiance 2

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

HMS Defiance 2 is set prior to the event of HMS Defiance. Set in 1942, you play as Stephen Cartwright – a hired specialist on the HMS Defiance, a research ship intended to conduct research on state of the art technology….

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Total Downloads: 1,01926th December 2008
16 Comments and 7 recommendations with no significant bias

Black Mess – PreRelease

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

“BLACK MESS is a HL2 single player mod with as goal a new single player campaign. In BLACK MESS you are entering a undergound facility controled by the combines. You have been send to this base to investegate what hapens in this base and solve the problem.”

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Total Downloads: 010th December 2008
7 Comments and 3 recommendations, most say "Think Twice"

Outbreak: Episode One

for Half-Life 2

The Outbreak Series is a number of episodic modifications. Based on the events of the Raccoon City zombie outbreak, each episode will tell the story of an ordinary man or women and what they did during the downfall of Raccoon City. The Outbreak Series will include: Single Player short games. Featuring classic Resident Evil objects and story related elements.

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Total Downloads: 1,59816th November 2008
23 Comments and 7 recommendations with no significant bias

Combine Force: Citadel City 17

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3

“In this mod you play as part of the Combine. Your objective is to defend City 3 from the hoards of Zombies and rebels. You start under the city and work your way to the surface, from there you move onto Ravenholm and then you acquire a vehicle and travel through the sandtraps. Onto Nova Prospekt and back to the city again. Your final act of defensive is the sacrifice of the Citadel City itself – You must destroy it rather than let the Zombies and rebels take control.”

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Total Downloads: 1,69716th November 2008
24 Comments and 8 recommendations, 3 say "Maybe?"