Group: Half-Life Series

Group members: Single titles

Worldcraft Pro

Half-Life (Dreamcast)

Team Fortress 2: Brotherhood of Arms

Half-Life

Team Fortress Classic

Half-Life: Opposing Force

Half-Life: Counter-Strike

Half-Life: Blue Shift

Half-Life (PlayStation 2)

Half-Life 2

Group members: Collections and compilations

Half-Life Adrenaline Pack (Half-Life Generation)

Half-Life: Game of the Year Edition

Half-Life Platinum Collection (Half-Life Generation 2)

Half-Life Platinum Collection 2002 (Half-Life Generation 3)

Half-Life 2: Collector's Edition