Synchro Ground-Pound

The Synchro Ground Pound (also spelled as synchro ground-pound, and formerly known as the Simultaneous Ground Pound ) is a variant of the Ground Pound that consists of multiple players performing a Ground Pound at the same time. The move is typically stronger than the normal Ground Pound and affects all enemies in a certain area, similar to a POW Block.

New Super Mario Bros. Wii
The Simultaneous Ground Pound is introduced in New Super Mario Bros. Wii, in multiplayer only. This creates a circular shockwave that quickly clears all enemies on the screen. It takes only three Simultaneous Ground Pounds to defeat Bowser prematurely in his first phase.

New Super Mario Bros. 2
The Synchro Ground Pound returns in New Super Mario Bros. 2, where it can be performed when Mario and Luigi ground pound at the same time.

New Super Mario Bros. U / New Super Luigi U / New Super Mario Bros. U Deluxe
The Synchro Ground Pound returns yet again in New Super Mario Bros. U, New Super Luigi U, and New Super Mario Bros. U Deluxe, behaving the same as in past games.

Super Mario 3D World / Super Mario 3D World + Bowser's Fury
The Synchro Ground Pound also appears in Super Mario 3D World and Super Mario 3D World + Bowser's Fury, yet again behaving the same as in past games.