They either required players to agree to play passive and stop from killing each other or disabled the weapon buy and only give them some weapons at the final stage of the course.
Surf maps initially consisted only of ramps designed to push the player through and force him to navigate midair to get through the track. What was a gimmick alternative to serious play at first has slowly evolved into a phenomenon of its own.
Falling on an oblique object caused a player model too, literally, surf. Back in the days of Counter-Strike 1.6, a cunning and heedful player called Mariowned noticed a peculiar engine behavior while playing around with friends on a map he created in Valve Hammer, the old Half-Life map editor.
