What does the Digital Deluxe Edition include?

It includes the base game plus a season pass of additional song packs released after launch. The extras are tracks, not new game modes.

Do I need to have played Final Fantasy games?

No. The game is playable as a pure rhythm game, but the fan service and Series mode land harder if you know the games.

Can I play it with friends?

It is built around single-player play, with no meaningful online competition. Local play is limited compared with other rhythm games.

How does it compare with the 3DS Theatrhythm games?

It keeps the tap-and-slide rhythm core but adds a much larger song list and deeper party progression. The presentation is closer to a console game than the handheld originals.

Does it work in handheld mode?

Yes. The simple tap, hold and slide controls suit handheld play, and the note charts stay readable on the Switch screen.

Is the Deluxe Edition worth it over the standard version?

If you expect to play a lot of songs, the added packs broaden the catalog. If you only want the base track list, the standard edition covers the core game.