GAA Rounders is one of the four official GAA sports included in the original GAA charter back in 1884 along with Gaelic Football, Hurling and Handball
Rounders is a bat and ball game and is not that dis-similar to baseball. Indeed it is now generally accepted that Baseball is derived from Rounders in some form or other, as it has been played on this island for a couple of hundred years now and was probably brought over to America by the early settlers.