Since then, several other states, such as Pennsylvania and Michigan, have joined NJ in pursuing a free and open online gambling market. Online casinos came to the US in 2013 when New Jersey became the first state to make online casino licenses available. We have prepared a full guide to online casinos in the US, including all the details on recognizing legal casino sites, picking between the different licensed casinos, and signing up for your first online casino account. If you are on the lookout for a legal online casino platform, you are in the right place. Today, a number of states have legalized online casinos as well, with dozens of platforms offering casino games over the internet. For decades, live casinos were the only place one could legally play casino games in the US.