is a rhythm video game developed by NanaOn-Sha and published by Sony Computer Entertainment. It was released for the PlayStation in Japan on December 9, 1999, and in Europe on September 1, 2000. Although the original PlayStation version was never released in North America, the game was re-released on PlayStation Network in North America in 2014. The game was initially commissioned as an advertisement for the Mercedes-Benz A-Class car. After design issues surfaced with the car and the ad plan was dropped, development continued as a stand-alone game. Masaya Matsuura, the producer of PaRappa the Rapper and Um Jammer Lammy, returned to lead Vib-Ribbon. The game's software loads into RAM, letting the player use any music CD to play custom levels; the game can generate a unique level from any track on the CD. The graphics for Vib-Ribbon are simple, consisting of straight, white vector lines forming crude, angular drawings of the level and the player character, named Vibri. Vib-Ribbon has received generally positive reviews from critics, praising its minimalist visuals and innovative concept, and has garnered a cult following; though the game has also received negative reviews criticizing its simplistic gameplay and design. It spawned two Japan-only follow-ups: Mojib-Ribbon (2003) and Vib-Ripple (2004). Gameplay Vib-Ribbon is a rhythm game in which players guide Vibri the rabbit across a line filled with obstacles tied in correspondence to the beat of the song, in a dimension called Music World. Stages contain four basic obstacles; block, loop, wave, and pit, which require players to press the L1, R1, X, or Down buttons respectively at the right time to navigate. Sometimes two obstacles will be merged, requiring the player to press two buttons at the same time (for example, a block and pit combination will require players to press L1 and Down together). Not pushing a button at the right time turns Vibri into a scribbled version of herself temporarily. Getting hit by obstacles too many times will degenerate Vibri from a rabbit into a frog, followed by a worm. Getting hit too many times while in worm form will end the game. Successful actions will help Vibri recover back to her higher forms, and clear enough obstacles in succession while in the rabbit form will evolve Vibri into Super Vibri, increasing the player's score until Vibri is hit. The player's score is tallied via symbols during the gameplay and converted into points