Jumgla is a multi-region contest where you compete against other players. Every round a player wins and gets paid the L$200 pot. Payment is automatic, you'll get a message and you receive the money. Rounds last 5 minutes or until at least 20 games are played.

You play a game costing L$100 or more, after the game finishes Jumgla will calculate your Jumgla score based on the game results. The one with the highest score wins.

Equal score? The one who had it first wins.

You don't have to do anything, just play your game and if you win the Jumgla contest, it pays you. There is no need to e.g. wear a group tag, click the device or stay in the region. When you win, you win.

When you click the Jumgla contest you get a message telling you if you are the current leader or not. Some might find that interesting, estimating if or if not to play another game this round.

Remember that the contest runs over all regions of the continent, thus you also compete against players playing in the neighbouring regions.

On the bottom of the machine you see two numbers, B and L.

B is used in the formula to calculate your Jumgla score. B will have every round a different value. This value is not random but based on the results of previous round.

L is the Jumgla score of the current leader. The player with the highest Jumgla score wins. 

Often when your game is almost over, you already know if you'll win or loose but there are still a few matches to make. Making them or not will give a different score but does no longer impact the fact if you win the game or not.

Calculate for each of these possible ending scores the Jumgla score and then go for the best one.

Besides B, given on the Jumgla contest, you also need S to calculate your Jumgla score. S is the highest of any of these values:

• The amount you paid to the game,
• The amount you won, or if you did not win, then B/2
  
• The end score of the game.
  

Put S and B in the formula shown here, skip the decimals of the outcome and then only take the last 3 digits. That is your Jumgla score.

The formula might look impressive to some. On your calculator you type this:

[S] x PI = / [B] = SQRT x [B] =

The default windows calculator does have buttons for PI and SQRT when opened in "Scientific" view, as does almost any calculator. It isn't cheating to use a spreadsheet either.

You might not have much desire to be busy with square roots and PI every game you play but it could be tempting, what if the shown current leader score is still pretty low? And you got a few possible matches you could choose to play or ignore...quickly checking which gives the best Jumgla score could be tempting.

Another skillful use of the Jumgla contest: Play when it is quiet. During some hours of the day there are more visitors then during other hours.

You could also check the value of L on the device. The best possible L is 999. If the current value is already close to that, plan your toilet break now. With a high score already made this round, waiting for the next one is an option.

It is all up to you. Use the formula each and every game? Never? Sometimes? For one thing this doesn't matter: If you win, you get paid.