Half-Life (series)

Half-Life is a popular series of first-person shooters developed by Valve Software.


 * Half-Life
 * Half-Life: Opposing Force
 * Half-Life: Blue Shift
 * Half-Life: Decay (released exclusively on PlayStation 2 by Gearbox Software)
 * Half-Life 2
 * Half-Life 2: Episode One (originally titled Half-Life 2: Aftermath)
 * Half-Life 2: Episode Two