Great selection of professional roulette wheels at discount prices. The hidden logic of the American and European roulette wheel layouts. Types of pockets, effect on game play. Construction and American roulette · European wheel based bets · The logic behind the wheel. The cloth covered betting area on a roulette table is known as the layout. The layout is either single zero or double zero. Russian roulette · Bauernroulette · Category:Roulette and wheel.