Geometry Dash Firework is an Extreme Demon level hosted by Vernam, created by the members of Cherry Team, and verified and published by Trick. It was rated on the same day as Slaughterhouse and Arcturus, which were also rated. Many people find it odd that the level's color palette is monochrome because fireworks are often thought of as being bright and vibrant.
The current leader of Cherry Team, Vernam, posted a video titled "Firework is practically impossible in its present state (Bad Noclip and Broken Sync)" on YouTube on April 7, 2019. According to Vernam, the Cherry Team will adorn the level as part of their newest project. The decorators got to work immediately, and two months after the release of the plan, a few components were finished: the first portion of Lilium, the parts of Konsi, Grayrain, and Desumari. Dolphy, who was the level's verifier at the time, made the decision to publish the initial Firework preview on his channel, which comprised all of the components previously mentioned.
After the fireworks were finished, the verification procedure began. Dolphy started the verification process slowly since he wanted to concentrate on Zynvire's Silent Circles, his other verification project. Vernam realized this and gave Firework to Crazen, who made about as much progress on the level as Dolphy. Vernam realized that a standard verification without any nerfs would be exceedingly difficult to figure out, therefore he chose to hack-verify the level and upload it to the servers as a free verification.