Atlassino Academy · Slots · Lesson 1 of 10

Reels, lines and what a spin costs

The big number on a slot machine counts credits, and a credit is not a dollar. Here is where the panel says what one credit is worth, and how to work out what your next press takes.

  • About 17 minutes
  • Illustrated hosts: Leo and Maya
  • Last checked 24 September 2026

The glass on the slot machine says your bet is 200 credits. How much money is that?

The short answer

Nobody can tell you that from the number of credits on its own. Two hundred credits is $2.00 at one machine and $200.00 at the machine four seats along it, and the glass says two hundred credits at both of them. What a press takes is three numbers multiplied by one another, and the count of credits on the glass leaves one of those three numbers out.

Credits on a line, times the lines switched on, times what one credit is worth, makes what the press takes.

Credits on a line2you set this
Lines switched on25you set this
What one credit is worth$0.01set inside the cabinet
What the press takes$0.50out of your pocket

What one credit is worth is the number people walk past.

Leo rests a fingertip on the smallest of three blank readout panes on the bet panel of a slot machine while Maya leans in from the other side and looks at the same pane, and the reel window above them holds five columns of plain shapes crossed by three lit line paths.
Leo smiling, explaining with an open hand.

Leoformer dealer · rules and maths

I worked a floor where a whole wall of machines looked alike, and one press on them ran anywhere from a cent to a couple of dollars. None of that was hidden from anybody. All three numbers — how many credits sit on a line, how many lines are switched on, and what one credit is worth — stood on the glass the whole time, and anyone could read them.

Two of those three numbers are yours to set, and a machine will let you set them both without your noticing that you have. That is why I ask people to read one bet panel slowly, line by line, before the first press of the evening. Read one panel properly and you can read every panel on the floor, because all of them carry the same three numbers.

The three numbers

A line is a run of symbols that pays if it comes up. How many lines are switched on is yours to choose, and every line you switch on is charged for separately, so switching on more lines raises what the press takes.

1 line switched on$0.01 a press
5 lines switched on$0.05 a press
25 lines switched on$0.25 a press

BET PANEL

ONE CREDIT$0.01
LINES25
CREDITS PER LINE2
BET50 CREDITS

The press takes $0.50

On every line that is switched on you put credits, on most machines from one to five. The panel multiplies the credits on a line by the lines switched on and shows the bet in credits: 2 credits on each of 25 lines is why the bet reads 50 credits.

The third number is what one credit is worth in money, and it is printed on the panel as well — usually in the smallest type there. At a machine you have not sat at before, look for what one credit is worth before you look at anything else, because until you have that figure the bet in credits tells you nothing about the money.

What one press takes, by the value of a credit and the setting
One credit1 line1 credit on each9 lines5 credits on each25 lines5 credits on each
$0.01 a credit$0.01$0.45$1.25
$0.05 a credit$0.05$2.25$6.25
$0.25 a credit$0.25$11.25$31.25
$1.00 a credit$1.00$45.00$125.00

The same reels at twelve prices: each row is what one credit is worth, fixed in the cabinet; each column is the lines and credits on each line you set. Amounts are in Canadian dollars.

You can put the machine in front of you through the same arithmetic in the Slot denomination calculator.

The big number is a count, not money

A credit is neither a coin nor a press. A credit is the unit the machine counts in, and every machine decides for itself what one of its credits is worth in money. The machine counts your bet in credits; your pocket pays for it in dollars.

The machine by the door

BET200CREDITS

One credit here is worth $0.01

So the press takes $2.00

The machine four seats along

BET200CREDITS

One credit here is worth $1.00

So the press takes $200.00

A machine gets called a penny machine after what one credit is worth on it, never after what a press on it takes. The smallest bet such a machine will accept can be a great deal more than a penny, because even the smallest bet still pays for every line that is switched on.

The max bet button raises both of your numbers

Max bet raises both of the numbers you control — how many credits sit on each line, and how many lines are switched on — as far as that machine allows, in one tap. One tap multiplies what the press takes twice over.

THE LOWEST SETTING THIS MACHINE OFFERS

ONE CREDIT$0.01
LINES1
CREDITS PER LINE1
BET1 CREDIT

The press takes $0.01

one tap of max bet

AFTER THE MAX BET TAP

ONE CREDIT$0.01
LINES25
CREDITS PER LINE5
BET125 CREDITS

The press takes $1.25

People reach for that button for a reason: where a machine feeds a prize that grows across the whole floor, a bet below a certain size is not in for that prize at all, and the size the machine asks for is often the max bet. What it costs to chase a prize like that comes later in this track.

What you can read before you pay

Everything that decides what your press does can be read before you bet.

  • The paytablewhat every symbol pays, line by line
  • The rules of the gamehow the game works, in full
  • What each feature doeswhat the extra rounds advertised on the glass actually do

On a slot machine you reach all three of them through the More Info button, in the same way that the odds for a table game are printed on the felt of the table itself.

  • A bigger bet does not buy a better share coming back. A machine gives back the same share or more on a higher bet, never less, and its payout floor holds at every setting. More lines buy more of the same share, not a better one.
  • A bigger bet does not always bring a bigger payout. Raising your bet raises the stake on each line; it does not promise that a line pays more when it comes up.

The machine may not encourage you to raise the total you have decided to bet. Nothing in that rule stops your own thumb from reaching for max bet.

An hour of pressing

A slot machine runs at about 14 presses a minute. Here is what that means for one hour of unbroken pressing.

  1. One press$2.00forty lines switched on, five credits on each line, at $0.01 for one credit
  2. One minute of pressing$2814 presses
  3. One unbroken hour of pressing$1,680840 presses

That last figure is the money passing through the machine, not the price of the hour to you: some of it comes back as credits and gets pressed again, and what stays with the room is a share, which is the next lesson. Price of an hour picks the arithmetic up from there, and the first thing it asks you for is what one press takes.

Take $120 as the money you brought for the evening. Divided by what one press takes, it gives the number of presses that money pays for.

At $0.25 a press

the money you brought pays for 480 presses

At $2.00 a press

the money you brought pays for 60 presses

This is a division, not a forecast: how far money actually carries at a machine is two lessons further along this track.

Maya with a hand on her chest, speaking gently and seriously.

Mayaformer floor supervisor · manners, money and breaks

Decide how much money the evening gets while you are still at home, and then let that amount choose the machine and the setting for you. Do it the other way round — sit down, set the machine, and then watch what the evening does to the money — and the machine has chosen the amount for you.

What a press takes is the one part of this you hold in your own hand. It decides how much money leaves you on every press, and it decides nothing at all about how much comes back.

If it stops being fun

If gambling stops being entertainment, help is available. 19+ in most of Canada; 18+ in Alberta, Manitoba and Quebec. More on responsible gaming.

1-866-531-2600Ontario · ConnexOntario · 24 hours
1-800-461-0140Quebec · Jeu: aide et référence · 24 hours
1-888-795-6111British Columbia · Gambling Support BC · 24 hours
1-866-332-2322Alberta · Addiction Helpline (Recovery Alberta) · 24 hours
1-800-463-1554Manitoba · Problem Gambling Helpline · 24 hours
1-800-306-6789Saskatchewan · Problem Gambling Help Line · 24 hours
1-888-429-8167Nova Scotia · Mental Health and Addictions Crisis Line · 24 hours
1-800-461-1234New Brunswick · Gambling Information Line
1-855-255-4255Prince Edward Island · PEI Gambling Support Line · 24 hours
811Newfoundland and Labrador · Gambling Help Line · 24 hours
1-844-533-3030Yukon · Reach Out Support Line (CMHA Yukon)

If you are thinking about suicide, call or text 9-8-8

Practice: read the panel

First a bet panel stands in front of you and you say how much money the next press takes. Then the money you brought for the evening decides how high you are allowed to set a machine. Then two machines stand side by side, and one of the two takes more money a press than it looks as though it does.

Nothing spins here. There are no reels in the practice run, no outcome and no money coming back, because a machine has no decision left in it once the button is down. Every decision you get to make happens before the button goes down, and those are the decisions worth practising.

The practice table needs JavaScript. Here is one press from it, with the answer.

Level 1 · Read the panel

BET PANEL

ONE CREDIT$0.01
LINES25
CREDITS PER LINE1
BET25 CREDITS

What will the next press take?

  • $0.25 1 credit on each of 25 lines makes 25 credits, and one credit on this machine is worth $0.01.
  • $25.00 That is the count of credits on the glass read as an amount of money. A credit is worth whatever this cabinet was set to, and the panel prints that figure — usually in its smallest line.
  • $0.01 That is what one credit is worth on this machine. The press is buying 25 credits, not one credit.

Three numbers multiplied together: how many credits sit on one line, how many lines are switched on, and what one credit is worth in money. The credits on a line and the lines switched on are the two you set yourself. What one credit is worth was set into the cabinet before you sat down at it.

The denomination or value of a credit is rarely the same as the cost of a spin on that machine. Even machines called “penny” or “nickel” may actually have minimum bets that are much higher. In other words your spin will never cost only one cent on a penny machine.
OLG PlaySmart · Slots — how to play: Breaking slots down · read

Level 2 · The bet you meant to make

BET PANEL

ONE CREDIT$0.01
LINES25
CREDITS PER LINE1
BET25 CREDITS

You have decided that one press should take no more than $0.50. What is the most you can put on each line, in credits, and still stay inside that?

  • 1 credit on each line — $0.25 a press A press at this setting is inside the amount you decided on, and so is a higher setting on the same machine. The question asks for the highest one that still fits.
  • 2 credits on each line — $0.50 a press This is the highest setting the panel offers that still keeps one press inside the amount you decided on.
  • 3 credits on each line — $0.75 a press A press at this setting takes $0.75, which is more than the amount you decided on.
  • 5 credits on each line — $1.25 a press A press at this setting takes $1.25, which is more than the amount you decided on.
  • None of them — every setting on this machine takes more than I decided on The smallest setting on this machine takes $0.25 a press, so the machine does fit inside the amount you decided on. The question is how high you can set it and still fit.

The amount you decided on at home is what chooses the setting on the machine. Do it the other way round — set the machine first, and then see what the evening does to the money — and the machine has chosen the amount for you.

Level 3 · Two machines

FIRST MACHINE

ONE CREDIT$0.01
LINES40
CREDITS PER LINE5
BET200 CREDITS

SECOND MACHINE

ONE CREDIT$1.00
LINES1
CREDITS PER LINE1
BET1 CREDIT

You want each press to take less money. Which of these two machines do you sit at?

  • The machine where one credit is worth $0.01 A press on that machine takes $2.00: 5 credits on each of 40 lines, at $0.01 for one credit.
  • The machine where one credit is worth $1.00 A press on that machine takes $1.00: 1 credit on each of 1 line, at $1.00 for one credit.
  • Neither of them — a press on the two machines takes the same A press on the two machines does not take the same: $2.00 on the first machine against $1.00 on the second.

A machine that takes less money a press is not the same thing as a machine that costs less to sit at all evening, and nothing on either panel tells you which of the two gives more back.

Every press in the practice run is worked out the same way, from the three numbers standing on the panel in front of you: how many credits sit on one line, how many lines are switched on, and what one credit is worth. Nothing spins here and nothing comes back, because a machine has no decision left in it once the button is down. The practice stops where your decisions stop.

How the practice run works

Where the presses come from. Every panel in the practice run is three numbers — what one credit is worth, how many lines are switched on, and how many credits sit on each line — and what the press takes is those three numbers multiplied together, worked out when the page is built rather than written down anywhere by hand. The wrong answers are worked out from the same three numbers, and each wrong answer is one named mistake: the lines left out of the multiplication, the credits on a line left out of it, the count of credits on the glass read as an amount of money, or what one credit is worth mistaken for what the whole press takes.

One strip, and no rounds. Every square on the strip is one press of this lesson, and all of the squares are there from the start. Your first answer fills the square it belongs to; when the squares of one level are full, the next level begins by itself, with no button in between. Practising a press you got wrong turns its cross into “fixed in practice” and does not change the count, because only first answers count.

Level 2 uses your own money. The amount is the one the plan lesson uses, and the right answer is the largest setting that still keeps a press inside that amount — not the smallest setting the machine offers. A machine whose smallest setting is already past the amount you decided on is a machine to walk away from, and walking away is one of the answers on offer.

Your progress stays in this browser, and nothing is sent anywhere.

Check yourself

Maya with a finger raised and a knowing look.

Mayaformer floor supervisor · manners, money and breaks

Five quick ones. Pick an answer, then check it. No timer, no points: just whether it stuck.

1A machine where one credit is worth $0.01. Forty lines are switched on, with five credits on each line. How much money does the next press take?

Show the answer

Answer: $2.00. Three numbers multiplied together. The machine calls the bet 200 credits, and the same panel says what one of those credits is worth.

  • $0.40 That is forty lines with one credit on each line. There are five credits on every line here, and not one.
  • $2.00 Five credits on each of forty lines makes two hundred credits, and one credit on this machine is worth $0.01.
  • $0.05 That is what five credits on a single line cost. Thirty-nine more lines are switched on as well, and every one of them carries the same five credits.
2The glass says the bet is 200 credits. How much money is that?

Show the answer

Answer: It depends on what one credit is worth on that cabinet. The count of credits is the same at every cabinet along the wall, and the money that count stands for is different at each of them. The one small figure that says what a credit is worth is doing all of that work.

  • Two dollars, because a credit is a cent That answer holds where one credit is worth a cent, and nowhere else. The count of credits itself does not change when you move one seat along the wall; what one credit is worth does.
  • It depends on what one credit is worth on that cabinet Two hundred credits is $2.00 where one credit is worth a cent, and $200.00 where one credit is worth a dollar. The glass reads two hundred credits in both cases.
  • Two hundred dollars, because a credit is a dollar That answer holds only at a machine where one credit really is worth a dollar. What one credit is worth at the machine you are sitting at is printed on its panel, in the smallest line on it.
3The same $2.00 press, kept up for an unbroken hour at 14 presses a minute. How much money goes through the machine? new situation

Show the answer

Answer: $1,680. What one press takes, multiplied by the presses in an hour, and nothing else. What stays with the room is a share of that figure rather than the whole of it, and working out how big that share is belongs to the next lesson.

  • $2.00 That is what one press takes. An hour of unbroken pressing holds eight hundred and forty presses, not one.
  • $1,680 What one press takes, multiplied by the presses in an hour. This is the money that passes through the machine, and it is not what the hour costs you.
  • $28 That is what one minute of pressing sends through the machine. An hour holds sixty of those minutes.
4You want each press to take less money. Would you sit at a penny machine with forty lines switched on and five credits on each line, or at a dollar machine with one credit on one line?

Show the answer

Answer: The dollar machine. The word written on the cabinet names what one credit is worth, and never what a press takes. A machine called a penny machine will not take a penny a press, and with enough lines switched on it can ask for more a press than a dollar machine does.

  • The dollar machine One credit on one line at the dollar machine takes $1.00 a press; the penny machine with forty lines switched on and five credits on each line takes $2.00 a press.
  • They come to the same thing over an evening Nothing is being averaged here. These are two prices for one press, $1.00 and $2.00, and you choose which of the two your thumb is paying.
  • The penny machine, because a penny is smaller than a dollar The penny is what one credit is worth on that machine. Its settings are asking for two hundred of those credits on every press.
5Does switching on more lines make the machine give back a better share of the money bet?

Show the answer

Answer: No: switching on more lines buys more of the same share. Raising a bet may not lower the share of the money bet that comes back, and that floor holds at every bet configuration a game offers, so a bigger bet buys more of the same share instead of improving it. A bigger bet does not always bring a bigger payout either.

  • Only where a growing prize is attached How big a bet has to be to be in for a prize that grows across the floor is a different question from what share comes back, and that question comes later in this track.
  • No: switching on more lines buys more of the same share A machine may not give back a smaller share of the money bet on a bigger bet than it does on a smaller one, and the floor it has to clear holds at every setting it offers. You buy more of the same share, and you pay more for it.
  • Yes, that is what the max bet button is for That button sets the most credits on a line and the most lines the machine allows, both at once. What it changes for certain is how much money the press takes.

Back to the question we opened with. Two hundred credits is a count of two hundred credits and nothing more than that, until you have found on the panel what one credit is worth at the machine you are sitting at.

Where the machines are, and further reading

19+ (18+ in AB, MB, QC) · Play responsibly · the helplines are further up this page

Further reading

  • Minimum Technical Standards for Gaming, 11: Game Behaviour · Alcohol and Gaming Commission of OntarioWhat a slot machine in a room is allowed to do, clause by clause: the payout floor, the reel strip, the odds on the largest prize and the ten games of history every machine can show you.
  • How to play slots · Ontario Lottery and Gaming Corporation (PlaySmart)An operator walking through the arithmetic of one spin, with its own worked example: nine lines on a nickel machine, and what one press of it takes.
  • How to play slots · British Columbia Lottery Corporation (Casinos BC)Reels, lines and the province’s average return, in the words of the corporation that runs the rooms.
  • Understanding chance: slot machines · Loto-Québec (Wise Play)The near miss, volatility and the illusion of control, named and explained by a provincial operator rather than by us.
  • Informed Gambling: slots and VLTs · Manitoba Liquor & LotteriesA short brochure on what a payout percentage is and is not, and why two machines with the same one can empty a wallet at different speeds.
  • Registrar's Standards for Internet Gaming: game design and features · Alcohol and Gaming Commission of OntarioThe same machine on a screen: what a regulated site in Ontario may not do with the picture after the outcome has been drawn.

How it's worked out

Numbers, sources and hosts

Where this happens. Every machine on this page is a cabinet standing in a room you can walk into. A screen at home multiplies the same three numbers, but it is asked for different things by a different book of rules, and it belongs to a track of its own.

Numbers. Every figure on this page is those three numbers on a panel multiplied together, or that product divided into the money you brought, and every one of them is worked out when the page is built. The hour uses the one pace this page names and no other pace, and it multiplies rather than predicts: an hour of unbroken pressing is the shape of an upper limit, not a description of how anybody actually sits at a machine.

What is deliberately absent. There is no rate of return on this page, no hit frequency, and no figure for how long money lasts at a machine. Each of those three needs something this page does not have, and each of them has a lesson of its own further along the track. What the money you brought buys here is a division — the number of presses it pays for — and never a forecast of an evening.

Sources. Every claim on this page carries a button with the sentence it rests on, the publisher who wrote that sentence and the date we read it.

Hosts. Leo and Maya are illustrated characters. Their backstories, a former dealer and a former floor supervisor, are written for the course: neither is a real person, and neither speaks for any casino. The rules and numbers on this page come from the sources it cites, not from their experience.

No promise. A slot machine is played against the house. Reading the panel tells you what a press takes before you pay it; nothing on this page makes that figure smaller, and nothing here says how an evening at a machine would end.

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