Hi, the plugin rumbles the controller. Another word for rumble you might have heard is haptic feedback. You know how when you are playing a game with a controller, and the controller shakes, rumbles, or vibrates sometimes? That is what this plugin does.
Here is a YouTube video if you would like to see the rumble feature in action on some controllers, the effect depends a bit on what technology is inside the controller the player has:
A positional rumble allows you to select a x/y coordinates on the map to simulate a location where the rumble is coming from. The plugin will reduce the intensity of the rumble automatically the farther away the player is.