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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Infestation

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
A partial conversion of an underground lab where scientists have been experimenting on a new drug to wipe out all forms of infection that humans can aquire.

2
4

Total Downloads: 1,48512th June 2009
15 Comments and 6 recommendations, most say "Maybe?"

Random Quest

for Half-Life 2

Single Player First Person Shooter Maps and Mods for Half-Life 1, 2 and Episodes 1, 2 and 3
This mod features some intense action scenes, but most of these come later on, much of the earlier parts of the mod are focused on adventure and storytelling.

2
10
12
4

Total Downloads: 3,4691st June 2009
71 Comments and 28 recommendations, most really enjoyed it!

Lost Concept Dev4

for Half-Life 2

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

I can’t tell you much about this mod except that it is supposed to be a leak. There are some levels from the E3 demonstration and plenty of levels I haven’t seen before.

3
1
2
1

Total Downloads: 1,35823rd May 2009
19 Comments and 7 recommendations, most haven't enjoyed it