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ODDS – Most slot machines will come with posted odds. Thus number, which can be expressed as a dollar amount, fraction, or ratio, represents the likelihood of winning the jackpot of the slot machine in question. It should go without saying that you want to home in on the best odds possible when choosing which game to play.

ONE-ARMED BANDIT – The term “one-armed bandit” is one near and dear to slot players’ hearts, even if it is a bit anachronistic now. The “arm” of the bandit is the lever that is pulled to spin the reels, and the “bandit” refers to the fact that slot machines can rob you blind, if you aren’t careful! Nowadays, slot games come equipped with a push-button start that is a lot easier on gamblers playing for hours at a time. Several game manufacturers have caught on to the power of players’ nostalgia, and retrofitted their games with a legacy arm, so that you can use either the button or a lever. Even online slots retain the loving moniker of “one-armed bandit,” however – proving that a good nickname never dies!

ONESIES – This something of a deprecating term for slot machine players who like to milk their bankroll for all it’s worth by feeding a single coin into the game at a time. Economy isn’t the sole reason for sole reason for onesies’ behavior… they may also nurse some truly weird superstitions about coin size, or simply enjoy dragging their gambling time out at length to soak it all in. Single-coin slot games are also called onesies, and would be the ideal diversion for players of thus persuasion, versus a multiplier slot or buy-a-pay machine.

ONLINE FILL – This is another term that can be a little mind-boggling. In the world of land casinos, a “fill” refers to the replenishment of coins within a slot machine terminal by an attendant. As online slots lack a tangible hopper, this phrase has nothing to do with the pot accumulated by a slot game. It refers to a player’s account, and how it is “filled” when you rack up winnings playing your favorite internet pokey.

OPTIMAL PLAY – “Optimal play” is the set of conditions under which a player can expect to reap the maximum possible payoff percentage of a skill-based slot game… in other words, perfect use. A “normal” fruity will offer every punter the same odds, but skill-based games (which may be used to thwart local gambling laws, but also add an extra dimension of interactivity to the slot machine) offer a range of probabilities based on the technique of the player in question. As is the case with almost anything in life, perfect use – optimal play – is hard to achieve, and requires a lot of diligence. Therefore, it’s likely that your ACTUAL odds of scoring a skill-based jackpot are somewhat lower than the optimal play statistics.

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