I finish a theme of Valve games.
This pack include 64 icons - 18 icons for main games and mods, 42 icons for third party mods and 4 extras:
2030
Action Half-Life
Black Mesa: Source
Blue Shift
Border Patrol
Brainbread
Capture the Flag
Code: Combine
Codename: Gordon
Combine Assault
Counter-Strike 1.6
Counter-Strike Condition Zero
Counter-Strike Deleted Scenes
Counter-Strike: Source
Counter-Strike Xbox
D.E.A.D.
Day of Defeat
Day of Defeat: Source
Deathmatch Classic
Dedicated Server
Desert Storm
Digital Paintball
Dragonball
Earth's Special Forces
Empire
Fortress Forever
Frontline Force
Garry's mod
Ghetto Blaster
Golden Eye: Source
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life Deathmatch
Half-Life Rally
Half-Life: Source
Hidden
Hoplites
Hostile Intent
Insects Infestation
International Online Soccer
Last 7 Hours
Natural Selection
Off Limits
Opposing Force
Perfect Dark
Plan of Attack
Ricochet
Rogue Threat
Science and Industry
Sin Episodes
Source Dedicated Server
Source Forts
Source SDK
Stargate mod
Steam
Substance
Sven Co-op
Team Fortress
The Battle Grounds
The Ship
The Specialists
Vampire Slayer
and World At War

Some mods already released, some mods will release soon.

All icons in .png 256x256 and .ico 16x16> 128x128.

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How to use:
For .ico - put icon to any folder, right click on desktop shortcut > properties > change icon > browse..

For .png use Objectdock - in C:\Program Files\Stardock\ObjectDock create any folder, put icons to this folder, put your desktop shortcut to objectdock, rightclick on this shortcut: "Dock Entry Properties..." -> "Change image" > "Browse..." and find icon.
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ADDon 1 to this pack here - [link]

*Update 1.1: Added "How to use" to readme file.

Enjoy!