Half-Life: Decay (2001)

Half-Life: Decay is an expansion pack for Half-Life developed by Gearbox Software and Valve Corporation and published by Sierra On-Line. It was released for the PlayStation 2 on November 14, 2001.

Special thanks to:

 * Brice Armstrong
 * Jon St. John
 * Kathy Levin
 * Lani Minella - Collette Green, Gina Cross
 * Harry S. Robbins
 * Mike Shapiro