WOO logo

On this page

Klub Keno

Introduction

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.

  1. There are 40 balls, numbered 1 to 40.
  2. The player shall pick 3 to 10 numbers.
  3. Out of the 40 balls, one will be selected at random to serve as the 'Star Ball.'
  4. During the game, 10 numbers will be drawn randomly.
  5. Players will receive payouts depending on how many of the randomly drawn numbers correspond to their selected numbers.
  6. 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%.