购买 Half-Life 2: Episode One

购买 The Orange Box

包含 5 件物品： Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Team Fortress 2, Portal

购买 Half-Life Complete

包含 10 件物品： 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

购买 Valve Complete Pack

包含 24 件物品： Counter-Strike, Team Fortress Classic, Day of Defeat, Deathmatch Classic, Half-Life: Opposing Force, Ricochet, Half-Life, Counter-Strike: Condition Zero, Half-Life: Blue Shift, Half-Life 2, Counter-Strike: Source, Half-Life: Source, Day of Defeat: Source, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One, Half-Life Deathmatch: Source, Left 4 Dead, Half-Life 2: Episode Two, Team Fortress 2, Portal, Left 4 Dead 2, Portal 2, Counter-Strike: Global Offensive

购买 Half-Life 2

购买 Half-Life 2: Episode Two