The player is wagering more money and at greater risk when moving from traditional three-coin machines to a multi-line, multi-credit game. This means that players are paying an increased HA rate when moving from a higher-denomination game, three-coin quarter game to a-lower denomination, multi-line, multi-credit game.

Traditionally this was done to compensate for the lower wagers per spin in the three-coin denomination era. HA is weighted in rate and is based on the denomination of the game the lower the denomination the greater the HA.

The slot machine's win rate is set by the casino operators and is called the “House Advantages” (HA). This range can be attributed to variations in a game's theme and the amount of time the game has been on the market. The range of players not winning any money on these high-variance games is between 6.9% and 29%. In some cases the top prize has a 1 win in 15 million spin hit ratio. This is true for the linked mega jackpots seen on casino floors and big jackpots seen in the bonus rounds of many games. This means there will be a whole lot of losing players for that one jackpot. This has the unintended consequences of creating a mathematical necessity for large volatility in these types of games. Because game designers believe players want a big win to create the “OMG” effect, $0.01 games that have top prizes of $1 million, $100,000 ,or even $10,000.

The introduction of lower denomination on the multi-line, multi-credit games pay out less than higher denomination three-coin single reel games. This is a 20% increase in loss rate or a 20% decrease in value to a player. The total effect of this cost of play example is a $144 increase in loss per month. With a routine player coming two times a week this represents a total loss for the month of $864. With an average wager of $0.90 and a 10% hold, this represents a player loss of $108 for a single trip. With an average spin rate of 10 spins a minute over a two-hour play period, this represents a total number of spins of 1,200.

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