Half-Life 2: Episode One
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Half-Life 2: Episode One is currently available on Steam.
🛒 Buy it on Steam (via Browser | Steam client*)
Supported OS:
Windows • 
Linux + 
SteamOS (See system requirements)
Also available from the following other storefronts or websites:
Google Play (
NVIDIA Shield only)
🛒 Buy it on Steam (via Browser | Steam client*)
Supported OS:
Windows • Linux + SteamOS (See system requirements)Also available from the following other storefronts or websites:
Google Play ( NVIDIA Shield only) Notice:
Warning:(
macOS only) - This game does not work on macOS Catalina (version 10.15) or later due to the removal of support for 32-bit-only apps.
Warning:( macOS only) - This game does not work on macOS Catalina (version 10.15) or later due to the removal of support for 32-bit-only apps.This template (and its redirect) is 
Deprecated. Its use is not recommended and its functionality may be compromised.
You can help our editors by replacing or deleting this template on the Pages that use this template. Once no more pages use this template, it should be Marked for deletion.
Additional notes:
Use #switch parser function instead. Example
Deprecated. Its use is not recommended and its functionality may be compromised. You can help our editors by replacing or deleting this template on the Pages that use this template. Once no more pages use this template, it should be Marked for deletion.
Additional notes:
Use #switch parser function instead. Example
{{#switch: {{language}}
| #default = English
| ja = 日本語
| zh-tw = 中文（台灣）
}} This game is included in the following packages:
Note:Archived page history
Important:These pages are linked often from page history logs so Special:WhatLinksHere will not show anything.
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