Complex sentence: Bauernroulette is a game (apparently invented in Germany, where several companies sell it--the name means "Farmer Roulette") in which a spinning top is spun in the middle of a wooden circular playing surface that contains 6 wooden balls.
Split into simpler sentences: Bauernroulette is a game that was apparently invented in Germany, where several companies sell it. In Bauernroulette, a spinning top is spun in the middle of a wooden circular playing surface that contains 6 wooden balls.