Distributing bulk prizes by percentage lets you determine the chance of winning, as each prize can be won by a specific percentage of players.
This prize setup may seem straightforward, but please note:
If you have limited prizes, it is possible to run out of prizes.
The prizes are arranged in order, from top to bottom, and the percentages affect each other.
Running out of limited prizes
Let’s imagine that you have 100 unique discount codes and a winner chance of 20%.
All 100 prizes will have been won after the first 500 players have participated the game. Then there will be no prizes left, and nobody else will win.
There are two ways to prevent this:
Use time distribution to spread your 100 prizes out over the campaign period. Learn more about time-distributed bulk prizes.
Add additional bulk prizes, such as consolation prizes. Learn more about consolation prizes.
Impact of prize order on winner percentage
Let's say you have two prizes and you want 50% of players to win in total: 20% should win the first prize and 30% should win the second prize.
You can't set the winner chance to 20% on the first prize and 30% on the second prize.
In the diagram below, you can see that you actually need to set the winner chance to 20% on the first prize and 38% on the second prize. This is because the winner chance for the second prize is calculated from among the 80% of participants who didn't win the first prize.
To help you calculate these percentages, use this spreadsheet (make a copy of the template to your own account) to find out what you should enter when setting up your bulk prizes. The video below shows how to use the spreadsheet.
Note that if you rearrange the order of your bulk prizes, you will have to re-calculate the percentages!
As always, remember to test your prizes before going live.