Land-based gambling venues were closed in March 2020 due to the COVID-19 pandemic. If someone wanted to gamble, they had to gamble online. The pandemic brought with it many challenges, including boredom, isolation, and financial hardship. All of these factors may motivate people to gamble or to engage in other addictive behaviours, such as alcohol use. This study examined the patterns of online gambling, substance use, and other technology use (e.g., video gaming) after land-based gambling venues were closed in the U.S. The researchers found that online gambling decreased but other addictive behaviours increased. People with more problem gambling symptoms increased their online gambling or started to gamble online during this time. They also increased their use of alcohol, tobacco, pornography, and online casino gaming.