Эволюция Тематической Песни Half-Life 1998 - 2012

1. Half-Life (1998)
2. Half-Life: Opposing Force (1999)
3. Half-Life: Blue Shift (2001)
4. Half-Life: Decay (2001)
5. Codename: Gordon (2004)
6. Half-Life 2 (2004)
7. Half-Life 2: Lost Coast (2005)
8. Half-Life 2: Episode One (2006)
9. Half-Life 2: Episode Two (2007)
10. Black Mesa (2012)