Supersonic

Supersonic is a demon level made by ZenthicAlpha & others in 1.9.

Description
Supersonic is a very hard demon level and a collaboration between: ZenthicAlpha, Glittershroom, Jeyzor, Sumsar, xcy7, Daddepro, Evasium, GBoy, and Viprin.

It is very difficult because of various invisible objects, false passages and flashing lights.

Arguably, the last part is one of the most annoying part of the level, as the player must dodge an abundance of Invisible saw-blades.

Trivia

 * A few people crashed at the last ball part, and a few people also crashed at the last ship part, the most severe ones were AlexPain24 and Riot, who both crashed at 98%.

Crashes

 * AlexPain24 crashed at the last ship part, 97%, and 98%.
 * GuitarHeroStyles crashed at 70%
 * Smokes665 crashed at 97%.
 * Retina crashed at 97%.
 * Riot also crashed at 98%.
 * Zobros crashed at 86%.
 * Smokeye(old account) crashed at 94%.