Welcome bonus at Qatar mobile casinos is a special promotion that allows players from Qatar to get an additional bonus on their first deposit when they sign up for mobile casino gaming at a Qatar-based site. This bonus, which is usually in the form of a percentage of the deposit, is designed to get players started and enticed to continue playing, thus increasing their chance of winning at the casino. The bonus usually comes with certain conditions, such as being valid for a certain period of time, or offering a maximum bonus amount.