Background and aims: In this study we aimed to assess multiple potentially addictive behaviours simultaneously for an extended period of time during the Covid-19 pandemic and their relation to distress. Methods: Data were collected every three days from Amazon?s MTurk between 26.03.2020 and 02.10.2020 in repeated cross-sectional samples of 25 participants resulting in a total sample of 1430 US adults (60% men, mean age 36.6 years, SD 5 11). General distress and Covid-19 related fear were assessed as well as self-reported frequency of eight potentially addictive behaviours: shopping (compulsive buying), alcohol, smoking, legal substances, illegal substances, gambling, gaming and overeating. Results: We found a positive relationship between time and the frequency of each self-reported potentially addictive behaviour (ő 5 0.15-0.23, all P < 0.001), and their frequency is linearly related to the intensity of (Covid-19-related and general) distress (ő 5 0.12-0.28, all P < 0.001). Most popular activities were gaming and compulsive buying, and the relative frequency of the behaviours remained about the same during the data collection period. Discussion: It is possible that people seek other maladaptive substitutes when other coping mechanisms (e.g. social recreation) are hindered depending on their level of distress. Conclusion: Given the evidence for the increasing frequency of potentially addictive behaviours and their relevance to distress, special attention needs to be paid to reduce potential harmful effects of maladaptive coping during and after this demanding period.  Kulcsszavak: chronic distress, addiction, alcohol use disorder, substance use disorder, pandemic, SARS-CoV-2