KBlocks shine wasan toshe fadowa na gargajiya. Manufar ita ce a tara tubalan da ke fadowa don ƙirƙirar layi a kwance ba tare da wani gibi ba. Lokacin da aka gama layi ana cire shi, kuma akwai ƙarin sarari a wurin wasan. Lokacin da babu isasshen sarari don tubalan su faɗi, wasan ya ƙare.