Writing Credits
| Marc Laidlaw | ... | (writer) |
| Chet Faliszek | ... | (writer) & |
| Erik Wolpaw | ... | (writer) |
Cast (in credits order)
| Robert Guillaume | ... | Dr. Eli Vance (voice) (archive sound) | |
| Robert Culp | ... | Dr. Wallace Breen (voice) (archive sound) | |
| Louis Gossett Jr. | ... | Vortigaunts (voice) (archive sound) | |
| Michelle Forbes | ... | Dr. Judith Mossman (voice) (archive sound) | |
| Merle Dandridge | ... | Alyx Vance (voice) (archive sound) | |
| Mike Shapiro | ... | G-Man / Barney Calhoun (voice) (archive sound) (as Michael Shapiro) | |
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Harry S. Robins | ... | Dr. Isaac Kleiner (voice) (archive sound) |
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Jim French | ... | Father Grigori / The Fisherman (voice) (archive sound) |
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John Patrick Lowrie | ... | Sniper / Citizens / Odessa Cubbage / Griggs (voice) (archive sound) |
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Mary Kae Irvin | ... | Citizens (voice) (archive sound) |
| Ellen McLain | ... | GLaDOS / Administrator / Overwatch (voice) (archive sound) | |
| Tony Todd | ... | Vortigaunts / Uriah (voice) (archive sound) | |
| John Aylward | ... | Dr. Arne Magnusson (voice) (archive sound) | |
| Adam Baldwin | ... | Sheckley / MIRT / Citizens (voice) (archive sound) | |
| Mike Patton | ... | The Anger Sphere (voice) (archive sound) | |
| Gary Schwartz | ... | Heavy / Demoman (voice) (archive sound) | |
| Grant Goodeve | ... | Engineer (voice) (archive sound) | |
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Nathan Vetterlein | ... | Scout (voice) (archive sound) |
| Robin Atkin Downes | ... | Medic (voice) (archive sound) | |
| Dennis Bateman | ... | Pyro / Spy (voice) (archive sound) | |
| Rick May | ... | Soldier (voice) (archive sound) | |
Produced by
| Gabe Newell | ... | executive producer |
| Bill van Buren | ... | producer |
Music by
| Kelly Bailey | ||
| Mike Morasky | ... | (segment "Portal") |
Art Department
| Stéphane Gaudette | ... | senior environment artist |
| Isabelle Lemay | ... | sr environment artist |
Sound Department
| Kelly Bailey | ... | sound designer |
Additional Crew
| Dario Casali | ... | designer |
| Tom Leonard | ... | designer |
| Doug Lombardi | ... | vice president of marketing |
| Dave Riller | ... | level designer |
| Travis Fox | ... | cqc tester (uncredited) |
