Online casinos powered by Gamesys feature a game known as 'Klub Keno.' This game resembles 40-ball keno , with an added twist: if the unique 'star ball' matches one of the player's selections, the winnings are doubled.
Rules
Here is my interpretation of the game rules. Unfortunately, I couldn't locate an official set of rules, so this is based on what I have observed. Sometimes, the 'star ball' does not actually display a star, which created some confusion. If any of my rules are incorrect, I would appreciate any clarifications.
There are 40 balls, numbered 1 to 40.
The player shall pick 3 to 10 numbers.
Out of the 40 balls, one will be selected at random to serve as the 'Star Ball.'
During the game, 10 numbers will be drawn randomly.
Players will receive payouts depending on how many of the randomly drawn numbers correspond to their selected numbers.
If the Star Ball is drawn and it aligns with one of the player’s selections, any winnings will be multiplied by two.
The table below illustrates the payouts based on the number of matching numbers according to the player's selections.
Pay TableExpand
Catch
Pick 3
Pick 4
Pick 5
Pick 6
Pick 7
Pick 8
Pick 9
Pick 10
3
4
5
6
7
8
9
10
0
1
2
3
2
1
1
3
40
4
3
2
1
1
1
4
130
20
4
5
5
2
1
5
450
80
50
8
5
5
6
1000
450
100
25
25
7
1300
800
700
450
8
8000
7000
2000
9
10000
8000
10
15000
Analysis
The subsequent table outlines the combinations available for various numbers of picks and matches.
Combination TableExpand
Catch
Pick 3
Pick 4
Pick 5
Pick 6
Pick 7
Pick 8
Pick 9
Pick 10
0
4060
27405
142506
593775
2035800
5852925
14307150
30045015
1
4350
40600
274050
1425060
5937750
20358000
58529250
143071500
2
1350
19575
182700
1233225
6412770
26719875
91611000
263381625
3
120
3600
52200
487200
3288600
17100720
71253000
244296000
4
210
6300
91350
852600
5755050
29926260
124692750
5
252
7560
109620
1023120
6906060
35911512
6
210
6300
91350
852600
5755050
7
120
3600
52200
487200
8
45
1350
19575
9
10
300
10
1
Total
9880
91390
658008
3838380
18643560
76904685
273438880
847660528
The next table indicates the probabilities, rounded to six decimal places, for each combination of picks and matching numbers.
Probability TableExpand
Catch
Pick 3
Pick 4
Pick 5
Pick 6
Pick 7
Pick 8
Pick 9
Pick 10
0
0.410931
0.299869
0.216572
0.154694
0.109196
0.076106
0.052323
0.035445
1
0.440283
0.44425
0.416484
0.371266
0.318488
0.264717
0.214049
0.168784
2
0.136640
0.214192
0.277656
0.321288
0.343967
0.347441
0.335033
0.310716
3
0.012146
0.039392
0.07933
0.126929
0.176393
0.222363
0.260581
0.288200
4
0.002298
0.009574
0.023799
0.045732
0.074834
0.109444
0.147102
5
0.000383
0.00197
0.00588
0.013304
0.025256
0.042365
6
0.000055
0.000338
0.001188
0.003118
0.006789
7
0.000006
0.000047
0.000191
0.000575
8
0.000001
0.000005
0.000023
9
0.000000
0.000000
10
0.000000
Total
1.000000
1.000000
1.000000
1.000000
1.000000
1.000000
1.000000
1.000000
The following table details the contribution to the overall return, specified to six decimal places, for each number of selections and matches. This table takes into account the likelihood and influence of matching the Star Ball, with the bottom row summarizing the total returns for different numbers of picks.
Return TableExpand
Catch
Pick 3
Pick 4
Pick 5
Pick 6
Pick 7
Pick 8
Pick 9
Pick 10
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
2
0.430415
0.449803
0.291539
0.337352
0
0
0
0
3
0.522267
0.169384
0.25584
0.272896
0.189623
0.23904
0.280125
0
4
0.328592
0.210636
0.104716
0.251524
0.411584
0.240777
0.161812
5
0.193881
0.177262
0.330738
0.119734
0.142067
0.238306
6
0.062917
0.174873
0.136601
0.089644
0.195193
7
0.009832
0.044003
0.157017
0.303903
8
0.005617
0.041472
0.055423
9
0.000448
0.003468
10
0.000022
Total
0.952682
0.947779
0.951896
0.955144
0.956589
0.956579
0.951549
0.958129
Strategy
As illustrated in the table above, the highest return is achieved with a pick of 10, boasting a return rate of 95.81%.