

Doom 64 allows access to its jumping feature after completing a secret level ( Hectic) "the hard way". Because of this, some source ports allow to disable jumping on a per-map basis, with a keyword in MAPINFO. Therefore, when using a source port that allows jumping in Doom or Heretic, it can be considered a cheat that breaks the normal flow of the map unless playing maps designed with jumping in mind. With jumping, the Player can simply jump over the obstacle and reach the needed item. When jumping is not possible, the maximum elevation that the player can step up is 24 map units, therefore allowing to create "ridiculously low walls" that must be lowered or otherwise worked around before the player can reach what lies in plain sight behind, for example a power-up, key, or switch. Jumping was not implemented originally in the Doom engine, and neither Doom nor Heretic offer it, however it was added to Hexen and Strife.



This can be achieved for a number of source ports which implement jumping by using an input device key which can be bound to a dedicated jumping feature. Jumping is meant here as adding an upwards impulse to the avatar by a user activity.
