Top Descriptors symmetrical Employs symmetry within the map design, often mirroring elements along the horizontal centreline. , freeform An unrestrained and loose approach towards visual structure. , improvisation Uses patterns that do not correspond to sounds in the music, often using hitsounds to add sounds in. , slidershapes Uses a large variety of slider designs. , distance snapped Uses osu's in-built distance snap feature for most/all of the map. , flow aim Patterns with fully continuous cursor movement, usually due to a combination of wide angles and little time between objects. , repetition Features the use of recognizable identical patterns or gameplay elements. , bursts Patterns requiring continuous movement and alternating, typically 9 notes or less. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps.