The article aims to present the issues related to the new phenomenon of loot boxes in virtual games. The work consists of four parts. The first one defines what loot boxes are and what is their meaning in virtual games. The second part presents psychological issues related to this matter – mainly in the context of similarities between the use of loot boxes and gambling games. The third part of the article explains how the use of loot boxes is regulated in Polish law and in the law of selected European countries. The last part of the study presents arguments why it is worth undertaking interdisciplinary research on the use of loot boxes.