Valve Complete Pack includes:
Counter Strike Global Offensive
Portal 2
Portal
Left 4 Dead
Left 4 Dead 2
Team Fortress 2
Team Fortress Classic
Counter Strike: Source
Counter Strike
Counter Strike: Condition Zero
Day of Defeat
Day of Defeat: Source
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Half-Life
Half-Life: Blue Shift
Half-Life: Opposing Force
Half-Life Deatchmatch: Source
Half-Life: Source
Ricochet
Deatchmatch Classic
1. Launch Steam and log into your account or create a new one (download Steam).
2. Choose "Games" from the menu and "Activate a Product on Steam".
3. Follow the onscreen instructions to complete the activation process.
4. You can find your new game in the "Library" tab.