To enter the Other World Free Round, you'll first need to open the portal. To do this, you'll need to win on 42 symbols. Once you have done this, and the feature has begun, you will be able to capitalize on any additional winning symbols you managed to land. For example, after every three additional winning symbols landed an extra portal effect will come into play. There are a total of seven available and all should be utilized as you progress through the game. This is great, but it doesn't stop there! Another final portal effect will be added when no further wins occur. Once this is played out, the Otherworld Free Round will come to an end when all remaining portal effects have been used up.