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It was in closed-beta stage and is slated to be released on the iOS platform. The closed beta ended in May 22, 2018. The game, according to a Konami press sheet, will also be available on Android dispositives and will be released worldwide in 2019.
The game's system has been described as cooperative, with up to four players at the same time. Characters can be improved to grow stronger, and fallen allies can be resurrected with a mechanic dubbed "Soul Resurrection". A cooperative Boss Rush mode has also been confirmed along with PvP battle mode with teams consisting of four players each.
It has been revealed that the game will make use of in-game currency and microtransactions.
Genya Arikado plays the role of main protagonist, and a new character called Lucy Westenra will play a supporting role. Playable characters on the closed beta are Alucard, Simon Belmont, Charlotte Aulin, Shanoa and Maria Renard from Castlevania: Rondo of Blood. Soma Cruz's artwork is present on the game's website, but not on the upcoming-characters' announcement section nor he is a playable character. Characters such as Albus, Richter Belmont, Maria Renard from Castlevania: Symphony of the Night, Jonathan Morris and Trevor Belmont appear as assist summons performing their "Ex Skill" special attacks.