Such a bonus is a casino's way of extending gratitude to players who choose them over the multitude of houses available online. It poses great benefit for the player in the form of being able to know how various games in the house operate without having to use their own money.
Israel, formally known as the State of Israel, is home to the Dead Sea. Despite its misleading name, this body of water is actually a very salty lake with tons of minerals in it. The nation also has a total ban on gambling activities, but players still find their way to international online casinos.