We can see from the final return table that the return from line pays is 0.586609. The rules say there is a cap of 180 free spins but that probability of that is truly negligible. After considering the probability if re-triggering the bonus in a free spin, the final number of free spins averages 16.832022. If the player gets three or more scatter symbols in a free spin, then he will get an additional 15 free spins.Īs shown in the scatter section above, the probability of three or more scatters is 0.007256, or 1 in 138. All wins, except for five Cleopatras, are tripled. Free spins use the same reel stripping as initial spins. The bonus round consists of an initial 15 free spins. If the player gets three or more scatter symbols, then he will play a bonus round. The bottom row shows a hit frequency on the scatter pay of 7.36% and a contribution to the total return of 17.51%. The following table shows the probability and contribution to the return for each number of scatter pays. Scatter pay wins are based on the total amount bet, as opposed the bet per pay-line. They do not have to be left aligned or on the same pay-line. It pays based on the number that appear anywhere on the screen. The Sphinx is known as a 'scatter pay' symbol. Note that reel 5 is longer than first four reels. Following are the reel strips for Cleopatra. The number of each symbol on each reel is carefully chosen to achieve a desired return. In other words each position on a given reel is equally likely. The way video slots like this one work is to choose a random number for each reel, from 1 to the number of positions in the reel, and map the random number to the corresponding position on the reel. I believe they pieced them together from a lot of playing, the same way I did other slot deconstructions, like the one of Lionfish. Our friends at Casino Guru were kind enough to provide the reel strips for the game at Vegas Slots Online. The version this analysis is based on is the one that can be played for free at. This is a simple five-reel video slot with a free spin bonus. In my continued effort to pull the veil of secrecy away and show how slot machines work, I offer the following deconstruction of the popular IGT game Cleopatra. Must-Hit-By Progressives on Ainsworth Slots.Shopping Spree Jackpot at $4 Million Does it Have a Positive Expected Value?.

Deconstructing the Atkins Diet Slot Machine.3d: Slot Machine Return Percentages for Henderson/Lake Mead Casinos.3c: Slot Machine returns in Tunica, MS (Mississippi).3b: Slot Machine Return Percentages in Jean & Primm, Nevada.2: How to Calculate the Return for a Slot Machine.

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