You must be thinking of something else.
Lol, zone bricks just take off the gravity value.
What I'm talking about is the ability to walk up walls, to rotate the player's axis to where it's kinda like marble madness, which runs of another engine just like this one, similar to it, but the marble was a vehicle and the player is considered a bot by the game's standard.
The game has a set value to how much gravity each item/player has, which can be regulated in the player/item script.
The zone bricks simply remove that value, or set it 0.