The world of virtual gambling opens wide money-winning opportunities. Any modern online casino is based on the same principles as real casino establishments. Online gambling resources include most prominent games of chance, such as casino roulette, card games or slots.
Online roulette is a popular casino entertainment. This game of chance has definite betting rules and certain strategic lines that might give potential players clues to better understanding of the game’s conception. The winning opportunities are determined by the roulette odds. Odds are estimated win/lose proportions based on the game's rules. For example, if a player places the bet on a single number (straight up), the odds are 36 to 1 (37 to 1 in one-zero roulette variation or 38 to 1 in the double-zero one); two numbers (split) the odds fall to 1 to 18; three numbers (street) – 1 to 12; four (corner) – 1 to 9; six (six line) – 1 to 6. If the bet is placed on twelve numbers simultaneously (dozen or column) the odds are calculated 1 to 3; wagering on any red/black high/low or even/odd number lowers the odds to 1 to 2 ratio. Odds ratio varies in correspondence with the number of betting cells (American-style roulette has got higher house edge and lower winning probability if compared to the European one).

Any leading online casino website has got gambling odds of all available games of luck presented on a separate bookmark. Gambling odds software is a specially developed program that calculates and updates the odds rates automatically.