Wacca

The game's arcade cabinet features a circular display screen enveloped by a circular touch panel on the outside; the player taps on the corresponding section of the touch panel as music notes approach the border of the circular screen, with the timing of the touch action resulting in a note judgement that contributes to the player's final score. In addition to some touch notes, the game also features hold notes, notes that slide left and right, and notes that involve flicking forwards and backwards on the touch pad.

Player progression data is saved using Sega's ALL.Net online service, with support for Sega Aime and Bandai Namco Banapassport IC cards.

Development for Wacca commenced in 2017, and the decision to collaborate with HARDCORE TANO*C – Japan's largest record label focused on hardcore techno music – was made during the early stages of development, as the game's producer, Tatsuya Yokoyama, was a fan of their work. Marvelous, having prior experience in developing games of various other genres, developed Wacca as their first arcade music rhythm game; they had previously developed the handheld rhythm game IA/VT Colorful for the PlayStation Vita in 2015.

During the game's opening event on October 19, 2018, Yokoyama stated that the primary reason for deciding on a rhythm game as their next title was due to his personal enjoyment of such games. HARDCORE TANO*C played an active role in gameplay development, creating note charts, with the game being their first attempt at writing game note charts in parallel with composing music audio tracks.