xLIB xLIB Revolution is a clone of the Dance Dance Revolution game using xLIB flash APP by Patrick Prendergast (hence the name). Unlike most other calculator clones this one features crazy graphics and run pretty fast. It also includes a level editor that will allow infinite possibilities for the game. You can even have background images in songs or even animations! Probably one of (if not the) best DDR clone for calcs. Enjoy and have fun!