Half-Life

Released: 1998
Publisher: Valve, Sierra
Developer: Valve Software, Gearbox Software

Patch

Name	Description	Link
Patch 1.1.0.8	Official patch for the Opposing Force expansion
Patch 1.1.1.0	Official patch

DLC

Name	Description	Link
Further data v2	Official CD made by Valve, contain new multiplayer maps and a standalone mini mission, It was relea...sed for free through retail outlets