A gambler is someone who thinks about gambling even when they�re not playing, looks for strategies, tries to recover losses, or feels a regular urge to play. It�s not only about how often someone gambles, but how mentally attached they are to it. In more advanced stages of gambling addiction, you even see slot reels in your dreams. If it turns into a cycle and a person wakes up in the morning with slots on their mind, that person is definitely a gambler.