Which games? If it's skill games like poker, you can make money, but only top of the top players will end up in profit. Sports betting also can earn you money if somehow you are good at predicting the winners, but by no means it will earn you a stable income. Hence, gambling is mainly classified in the entertainment industry. It's mainly for fun, BUT you can make money (even big money) if you are lucky. The other types of entertainment have zero chance of making you rich.
So to answer your question: it's both, but you should lean more on the fun side if you don't want to get into trouble.