Free access to pseudo-osu!direct service (is an osu!supporter feature in osu!).
Dynamic Main Menu background based on the current song's background (can be disabled; is an osu!supporter feature in osu!).
May need to change the Music Offset value if hit objects are out of sync.
opsu! allows any beatmaps to forcefully use a predefined "Difficulty Settings" set in the Options sidebar.
opsu! has about the same amount of Game Modifiers (in-progress) to osu!.
For Android players
More faithful to osu!.
opsu! Desktop is almost the same as opsu! Android.
For a small screen (4-inch and below) or having difficulty reading the user interface, the user interface can be scaled in the options screen under Extras;UI Scale.
In doubt, use the left side of the screen for scrolling.
Absolute Scrolling (right-click to speedscroll the scrollbar exactly to the cursor location by top-down distance) is disabled here.