Source Multiplayer Pack
Region — Works worldwide — no region restriction.
Can be activated in United States
WindowsScreenshots & trailer
Buy Source Multiplayer Pack account
In 2005, the retail release of Counter-Strike: Source included Half-Life 2: Deathmatch and Day of Defeat: Source as bonus games.
In 2010, Steam released a digital version of the same bundle as Source Multiplayer Pack.
How to activate Source Multiplayer Pack on Steam
- 01
Buy & receive your code
Complete checkout — your code lands in your inbox in ~30 seconds, and is always available under Orders in your Gameplug account.
- 02
Open Steam
In the desktop client: top-left menu "Games" → "Activate a Product on Steam…" (or use the web link below).
- 03
Enter your key
Paste the key (format XXXXX-XXXXX-XXXXX) and accept the Steam Subscriber Agreement.
- 04
Install & play
The game joins your library permanently — install it on any machine you sign in to.
Code not working? Contact support — confirmed-invalid codes are replaced or refunded.
