Complex sentence: The frog game is played both in the Basque Country and some adjacent areas such as Asturias, in particular in Basque sagardotegiak (cider houses) and taverns.
Split into simpler sentences: The frog game is a pub game played both in the Basque Country and outside. In the Basque Country, it is commonly played in Basque sagardotegiak (cider houses) and taverns.