Sound Voltex

 is a series of music games by Konami. Sound Voltex Booth was tested on various cities in Japan starting on August 26, 2011 until September 19, 2011. It was then released on January 18, 2012.
Sequels "Sound Voltex II: Infinite Infection", "Sound Voltex III: Gravity Wars", "Sound Voltex IV: Heavenly Haven", "Sound Voltex: Vivid Wave", and "Sound Voltex: Exceed Gear" were released on June 5, 2013, November 20, 2014, December 21, 2016, February 28, 2019, and February 17, 2021 respectively. "Sound Voltex" has been released, though in a limited fashion, in arcades outside of Japan. A conversion of "Sound Voltex III: Gravity Wars", with the subtitle "Konami Game Station" was released as a PC game on October 4, 2017.
Overview.
"Sound Voltex" consists of two different parts that relate to each other: "Sound Voltex Booth" and "Sound Voltex Floor". "Sound Voltex Booth" is the main game, while "Sound Voltex Floor" is a system wherein game content is created by Japanese artists and musicians. Content chosen from "Sound Voltex Floor" will be inserted into "Sound Voltex Booth" and become available in the game.
Unlike most rhythm arcade games, "Sound Voltex" does not require players to play the music correctly. Instead, players are challenged to make various effects on the existing music track.
Gameplay.
Objects.
Various objects come towards player on the course lane, which consists of 6 columns of rails. The player is required to input corresponding commands when the object reaches the Critical Line at the bottom of the screen. The command required will differ, depending on the objects.
Rate systems.
As the player hits the objects, a judgment is received—from highest to lowest: S-Critical ("Valkyrie Model" only), Critical, Near, and Error—depending on the timing of hitting the objects. (For long objects and Analog Devices, (S-)Critical and Error only.) S-Critical and Critical fills the rate gauge, while Error depletes it. (From "SDVX II" onward, Near also fills the gauge, but only 1/4 of the amount that S-Critical or Critical fills.) The player is required to fill the rate gauge a certain amount by the time the stage ends to clear it; otherwise the player fails it, and the play session will be over. The amount required to fill the gauge will differ, depending on the rate system the player is using.
Skill Analyzer.
Skill Analyzer mode is a mode added in "SDVX II", which can let the player test their Skill Level. The player first selects the course to play, and the course will immediately begin after selection. The course is harder, as the higher the required Skill Level is, the harder the course. Each Skill Level contains 3 different courses for the player to select.
The Skill Levels (in "SDVX III") are: