Geometry Dash Firewall is a solo Insane Demon 2.0 created and verified by Hinds. It features flashing neon lights and colorful decorations. Despite being a 2.0 level, the gameplay remains typical of 1.9 levels. Specifically, it does not include moving objects and epic boss battles.
The firewall begins with a cube section, which operates at a moderate speed. However, this section is filled with numerous spikes. The player needs to navigate skillfully to overcome them. Then, as the music becomes more intense, the player begins to enter the ball segment. Next, the player will enter the wave section, the most notable part of this level. This section recreates the typical gameplay of Nine Circles levels with tight spaces and tripled speed.