A ghost jump is a form of trick jumping where you jump off of a surface you normally couldn't walk on or jump on.
In order to do a ghost jump, you must first find a polygon seam that you can jump to.There are variations on how to do a ghost jump. 1. You jump and hold crouch when you jump,and when you are about to fall back down,release crouch and jump. 2. Just jump above the seam and jump when you are about to fall back down.
There are many different types of ghost jumps. Such as Edge Ghosts and Wedge ghosts. You can walk on a ghost for a split second,gaining momentum to get to farther locations. Other types of ghost jumps are overghosts,clickety tricks,and multi-ghost jumps.