The "Scarlet" version was an enhancement that added new characters, stages, and other content. When it comes to the Nintendo Switch, there was anticipation and speculation about its release, given the console's popularity and the series' history.
The core gameplay involves choosing a DOA girl, building relationships, gifting swimsuits, and playing tropical minigames. It is not a fighter; it is a relaxing (and deliberately provocative) vacation sim.
The Nintendo Switch version, titled "Dead or Alive Xtreme 3 Scarlet", was released in Japan on September 26, 2019. This version includes updated graphics and new features compared to the original release.