As an Easy Demon , it demands mastery of every mechanic introduced up to that point. Level 19: Geometrical Dominator (Insane)
He skipped Level 20 ( Theory of Everything 2 ), deciding to save it for last as a palette cleanser. He wanted to prove himself against the ultimate challenge of the official list: Deadlocked . geometry dash 16-21
Widely considered the hardest non-demon official level before Deadlocked , Theory of Everything 2 combines every prior mechanic: triple spikes, mini-wave, upside-down ship, and invisible speed changes. The level’s notorious “memory cube” segment requires memorizing a 10-second sequence of fake paths. Design-wise, it introduces as a legitimate teaching tool—players must die repeatedly to learn the correct route, a precursor to demon-level “trial and error” design. As an Easy Demon , it demands mastery
The community calls it .