Masterduelphobia

Not to be confused with Mastrophobia.

Masterduelphobia is the fear of Master Duel, an Extreme Demon in Geometry Dash.

Causes

 * Failing at a high percentage on the level
 * Just disliking the level
 * Being scared of Geometry Dash in general (see Geometrydashphobia)
 * Being scared of how hard it is