Addiction can exist without necessarily referring to psychoactive substances; an individual can become addicted to certain experiences that don’t have to include psychoactive substance intake. Therefore, gambling addiction is included under behavioural addictions. This paper shows various gambling addiction models, their classification, diagnostics and psychosocial functioning of addicts from the aspect of work ability and family repercussions. In addition, there is in included interpretation of the relation between other psychiatric comorbidities that are a common occurrence with this addiction, motivation of gamblers and their personality traits and a crucial but alarming phenomenon-adolescent gambling. Also listed are psychofarmacotherapeutic treatments that proved to be efficient with the addition of importance of prevention. The objective of this paper is to conduct a literature review of the features and problems that come with problematic and pathological gambling with the aim of raising awareness about gambling addiction as a serious addiction of the modern era.