Poker involves some skill. This sets it apart from other gambling activities. This study compared erroneous beliefs of three groups of online poker players with different levels of gambling problem severity. The researchers invited 30 participants to play in an online poker tournament. Participants were placed into three groups of non-problem, at-risk, and problem gambling. The researchers examined the verbalizations of these groups while they played. Beliefs related to the illusion of control were found in all three groups. Participants with at-risk or problem gambling felt that they were more in control of the game’s outcomes (i.e., they underestimated the role of chance) and that they could make up for their losses. Both groups also thought that the online game was rigged.