Geometry Dash Bang Gang is a solo Extreme Demon 2.1 created and published by Danzmen. It is a spin-off of one of Danzmen's Easy Demons, called Slap Squad. This level features multiple time slots and narrow paths. In addition, its two-player mechanics make it difficult for players to complete the level alone.
Bang Gang has a very unique mechanic that allows players to use the dual control buttons in reverse. This implies a reversal of the control buttons from the standard mechanics. This allows players to easily overcome boss battles. However, players need to practice to master this reversal mechanic.