I don't really know if similar question or concerns has been raised before, we often say that we are gamblers but does it mean that anyone who gambles once or twice is a gambler? If no, how long could someone be classified as a gambler or what games that are to be classified as someone gambling.
Drop your opinion.
Just from the definition of a gambler, once the person engages in gambling activity, he is already a gambler. About the game a person to play to classified him as a gambler is any game that requires risk, a wager, and a reward, where a person needs to risk a wager that has something of value to get a reward. For example, even a simple rock paper scissor game can be a gambling game if the players add a wager (something of value) where the winner will take the pot money can be considered a gambling game, and the people who are playing that rock paper scissor are classified as a gambler.