In video games:
* Half-Life (series), a video game series by Valve
o Half-Life (video game), a 1998 game and the first title in the series
+ Half-Life: Opposing Force, Blue Shift, and Decay, expansion packs for the first title.
o Half-Life 2, the 2004 sequel to the first game
+ Half-Life 2: Episodes One, Two, and Three, a trilogy of episodic games serving as a sequel to Half-Life 2
Isn't Wikipedia fun.
Half-Life: Opposing Force! Awesome game!
oh if its the one in the future Gunman chronicles?
its not really half life related but it uses the same engine.
It was all about team fortress for me! :P