Half-Life (series)/Trivia
- There is an arcade game based off of Half-Life 2, co-developed by Valve and Taito. It's Japan-exclusive as well as the only Half-Life game Japan ever got. No, nothing else from Valve counts.
- Fan Nickname: The Vortigaunt who accompanies you through parts of Episode Two has no official name. Naturally, he was nicknamed Cecil.
- Hey, It's That Voice!:
- Ellen McLain (GLaDOS, the announcer) voices the Overwatch.
- Jim French (William 'Bill' Overbeck) voices Father Grigori.
- Michelle Forbes (Admiral Cain, Ensign Ro) voices Judith Mossman.
- Robert Guillaume (Rafiki, Benson) voices Eli Vance.
- Robert Culp (The Greatest American Hero) is Dr. Wallace Breen.
- Shrug of God: Marc Laidlaw is very ambiguous about some parts of the overall continuity. Not only towards the things added on by the Gearbox expansions, but also when it comes to Valve's own games.
- Trope Namers:
- Black Mesa Commute
- Lighthouse Point
- No OSHA Compliance
- Right Man in the Wrong Place
- Stand Back Hello (former name of Simultaneous Warning and Action)
- Xen Syndrome (former name of Disappointing Last Level)
- Vaporware: Common with this series (and even more so for Team Fortress 2, though it did finally get released). Episode Three is currently approaching this. We're four years past Episode Two's release date and there isn't a single screenshot or trailer for Episode Three.