Vib-Ribbon is a game for Sony PlayStation. Developed by Masaya Matsuura (the former leader of the Japanese "Hyper Pop Unit" PSY S) and his NanaOn-Sha company, and released in 1999, the game was sold in Japan and Europe. Vib-Ribbon is a rhythm video game in the style of PaRappa the Rapper and Amplitude. The game was unique in that the software loaded into RAM, letting the player use any music CD to play against -- the game could generate a unique level from any track. The graphics for Vib-Ribbon are simple, consisting of straight, white vector lines forming crude, angular drawings of the level and the character, a female rabbit named Vibri.
The object of the game is to guide Vibri along a ribbon filled with obstacles corresponding to the song being played. Pressing the correct buttons at the right time will let Vibri pass unscathed. Failing to do so will make Vibri degenerate from a rabbit of into a frog, then a worm, and finally perishing for good. If enough obstacles are navigated successfully, Vibri's form is "promoted" to that of fairy princess. The game's score is represented by a series of symbols that accumulate as the game level progresses. A numerical score is generated at the end of the song. Depending on the score obtained, Vibri will sing a congratulatory song that gets longer with higher scores.