The Fence Flapper is the first obstacle used in S3; E1 of Wipeout. It consists of a long beam that the contestants must run across while avoiding any of the 11 panels that swing out from the wall and attempt to knock the contestants off of the beam. After falling off of the obstacle the first time, the contestants had to climb up out of the mud pit and onto a staircase accompanied by four white foam spikes and attempt the same thing on the other side.
The Fence Flapper appeared in Wipeout: The Game for the Nintendo DS and the Wii. It also had a mud pit. When a flap was about to open, smoke appeared from under the specific flap. No spikes appear in the game.