| In
Nevada, where two zeros are used, the house advantage
is 5.26 percent. If a gambler wagers on any other
bet but the 0 and 00, if either of those numbers
comes up, all the other bets on the layout lose
automatically.
When one zero is used, the house advantage is reduced
to 2.70 percent. But the Nevada casinos that use
one-zero roulette wheels are few and far between,
and these casinos usually require a $5 minimum bet
on their layout.
In Atlantic City, where two zeros are used, if the
ball should land in either the 0 or 00 pocket, then
only half the bet is lost, or surrendered, if the
player had bet on any of the even-money outside
wagers (red-black, high-low, odd-even). Or the bet
may be held for another spin. If the bet wins, it
is returned to the player intact. This is the en
prison rule.
In the European and English casinos there is one
zero only, giving the house a 2.70 percent advantage.
However, there is also the en prison rule, which
allows gamblers, at their option, to give up either
half their bet if the 0 has been landed on while
they had a bet on the even-money outside wagers,
or to leave their bet intact and let it ride one
more time. If the bet wins on this subsequent spin,
they can remove it intact.
When the en. prison rule is in force, the house
advantage in European roulette is reduced to 1.352
percent, a substantial reduction from the 5.26 percent
in most American casinos. This low advantage is
why roulette is so popular in Europe and why countless
thousands have been searching for centuries for
the perfect system to beat the game.
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