This one screams 'one good turn deserves another.' For making a gesture of intent through deposit, casinos reciprocate by giving the player a deposit bonus. This is an extra bonus that they can use separately or alongside their deposit to play for real money within the house, meaning they have more to play with.
This Arabian country is progressive in many ways, compared to its neighbors. To go with its good economy, there is a huge demand for gambling that is not being met. Strict laws against gambling are supported by Islam. However, there is a huge mobile and online gaming culture that is illegal but not heavily regulated.