The listing, Half Life Complete - Steam has ended.
http://store.steampowered.com/sub/715/
From the makers of games like Team Fortress 2 (Also known as TF2), and Dota, I bring you a pile of games that lack the number 3 in them! This is for the Steam games in the Half Life Complete. This will be send to your inventory to be used for more trading, or to activate in your own steam profile.
The games on the pack are Team Fortress Classic, Half-Life: Opposing Force, Half-Life, Half-Life: Blue Shift, Half-Life 2, Half-Life: Source, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One, Half-Life 2: Episode Two