Top Descriptors reading Tests a player's reading skill, i.e. patterns that obfuscate note order and/or timing. , chaotic Unpredictable map design, often testing unusual skillsets. , symmetrical Employs symmetry within the map design, often mirroring elements along the horizontal centreline. , video gimmick Employs patterning that closely references the included background video. , avant-garde Employs boundary-pushing and experimental philosophies to map design, often foregoing gameplay and aesthetic conventions to extreme measures. , old-style revival Emulates a style closely associated with early mapping, typically to pay homage or invoke nostalgia. , messy Visually chaotic and intentionally disorganised patterns, often involving many overlaps and unequal visual spacing between objects. , geometric Incorporates geometric shapes within the map's visual design. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , grid snap Objects are placed along a square grid, typically using osu!'s in-built grid snap feature.