Coin Slot Magazine - #008 - 1975 - April [International Arcade Museum]
THE COIN SLOT
April/May
1975
HOW TO COMPUTE SLOT MACHINE PAYOUT PERCENTAGE
The example used below is the mystery payout reel strips with the
special gold award used by Mills during the mid 30fs.
1st the total number of each symbol is tabulated off each reel.
Lemon
Cherry
Orange
Plum
Bell
Gold Award
Bar
1st reel
3
6
3
2nd reel
0
7
4
4
3
2
2
2
2
3rd reel
3
0
5
5
4
1
2
20
1
1
20
The number of each symbol per reel and the number of coins paid out
for that symbol (listed on the award card) are multiplied. The 3 pay
cherry parentheses (20-7) is the twenty total stops of the 3rd reel less
the 3 lemons and 4 bells. The 5 pay cherry parentheses (3-f- 4) is the
3 lemons and the 4 bells found on the 3rd reel. And the jackpot paren
theses (20 4- 80) is the 20 coins paid from the slides plus the 80 coins
(approximate) dropped from the automatic jackpot.
1st
no9 coins
paid out
2
2
3
2
3
2
3
2
3
3
cherries
3
cherries, lemon-bell .. 5
oranges
10
oranges, bar
10
plums
14
plums, bar
14
bells ,,
18
bells, bar
18
gold awards
50
bars
(20+80)
X
X
X
X
6
6
3
3
X
X
X
2
2
2
X
2
X
X
X
4
4
4
X
X
X
7
7
4
X
X
2
2
X
3rd
reel
2nd
reel
reel
X
3
3
1
1
X
X
X
X
X
X
X
X
X
X
X
X
total no.
coins paid
(20-7) = 1638
(3+4) = 1470
= 600
5
2
5
2
4
2
1
2
=
=
-
=
=
=
=
240
560
224
432
216
100
400
58S0
total
payout
The payout percentage is found by dividing the total payout (5880)
by the total possible combinations (20 symbols 1st reelx 20 symbols
.com
m
:
u
from -muse
d
e
oad .arcade
l
n
Dow //www
:
http
2nd reel x 20 symbols 3rd reel (8000).
.735 = 73.5%
8000 ) 5880.000
© The International Arcade Museum
http://www.arcade-museum.com/