I seem to remember one version of "fivestones" which, after the first throw-flip-throw-catch (as described) to start the game, those caught were discarded (except one for throwing) and the remainder were lined up with a gap between each. The object of this variant was to throw up the retained "stone" and "leapfrog" another along the line, this was then discarded and the next was moved along until all had been discarded (then you try it with two). (need I mention that this was a ten stone variant?)

Regards

Walrus