Developer | Gearbox Software Valve |
Publisher | Sierra On-Line Valve |
Released |
31 Temmuz 2013
12 Eylül 2003
29 Kasım 1999
all releases ▾
18 Kasım 1999
|
Web sitesi |
Steam product page |
Action Shooter |
Historical period |
Contemporary history |
Perspective |
First-person |
Presentation |
3D |
Setting genre |
Science fiction |
Supernatural beings |
Zombies |
Type of events |
Fictitious events |
World |
Fictitious world Real world |