Abstract
Since the onset of COVID-19, studies suggest a significant increase in online gambling, potentially facilitated by increased time at home, social isolation and boredom. This study aimed to address what is known about the impact of the pandemic on gambling behaviour by conducting a mapping review. A systematic literature search was conducted using four online databases. Additional studies were identified using reference lists. Relevant studies were quality scored and their findings synthesised in terms of overall changes at the population level and potentially vulnerable groups. The weight of evidence from 35 relevant reports across 12 countries indicated reductions of gambling during the pandemic at the level of the general population. However, marked increases in gambling amongst vulnerable sub-populations including amongst young adults and people with pre-existing at-risk gambling were also noted. The impact of COVID-19 on gambling is highly contingent on context. If policy makers examine only population level data, this could overlook profound negative effects identified in those with at-risk gambling, gambling disorder, and amongst young adults.