DinoHunters is a work of fiction by Kuma that combines choreographed scenes with stimulating first-person shooting.
It is a free game which could be classified as "advergaming" as the game has a real life sponsor in the form of Schick Quattro razors. Players do not need to own a copy of Half-Life 2 in order to play.
The DinoHunters website is a rather amusing spoof of the whole reality/dedicated TV channel genre.
this game is not available on steam as of this moment