The Specialists (TS) is a modification for Valve's infamous first-person shooter, Half-Life. It is a real fusion of ideas, taking inspiration from such
famous Hollywood movies as Face/Off & The Matrix, mixed with the Hong
Kong Blood Opera style of directors such as John Woo. All of this is added
to classic yet innovative deathmatch & teamplay gametypes and mixed
with an arsenal of realistic weapons, real freedom of movement, a great
selection of maps and serious amounts of carnage.
All of the above combine to create one of the most fast-paced, exciting and spectacular mods available.
(Taken from http://specialistsmod.net/about/game.htm)