The top 5 European roulette casinos on our list are all fully licensed by at least one gambling authority, either the Curaçao Gaming Control Board or the Malta Gambling Authority. This means that before applying for the license, they were audited by an independent body or bodies - casino test labs to ensure that the games they run are fair and honest. Furthermore, all of the software providers used by these casinos (Evolution, Pragmatic Play, Playtech, and so on) are also fully licensed and regulated.