Game mode / osu!mania · wiki

Game mode / osu!mania · wiki

osu!mania World Cup / osu!mania 4K World Cup 2021 · wiki

Different HUD for each mods (Classic, taiko, Mania & catch) · ppy osu · Discussion #19685 · GitHub

Gameplay / Game modifier · wiki

Game modifier / Mirror (mod) · wiki

SO is allowed although it's not Difficulty reduction nor Difficulty increase · Issue #6763 · ppy/osu-wiki · GitHub

Learning the Basics, Osu! - It's Dangerous To Play Alone! Wikia

Guides / osu!mania mapping guide · wiki

osu!mania World Cup / osu!mania 4K World Cup 2016 · wiki

How to Play osu! (with Pictures) - wikiHow