By popular request: As S-Random is officially supported for score saving as of Happy Sky (and is also included on DistorteD), support has been added to use it as a modifier.

It is only available for DistorteD and Happy Sky session modes, on both 3.0 and 4.0a.

No change to ranking criteria has been applied. Please save your twenty paragraph rants about how random modifiers ruin the sanctity of the note charts.

Relevant wiki page has been updated to reflect this.