Every people have different thoughts. If you think trading is fun, then it goes to be a game for you. Seriously, some investors think that this is not a game or fun for them. They invest a lot of money, some of them fail to earn, but some of them earn a lot of money. Only you can decide if trading is a game or take it seriously.
Oh it depends on though of each person ,because trading is not a easy job to get approached. It is full of risky, you definitely face with many difficulties from first time till you can take it as a hobby. Some people who used to get benefit from trading ,surely they feel trading is fun and even its just like a game. In contrary, some got failed, they absolutely didnt have good mood. To me, I really like to trade, it may be my passion because I find it interesting to trade in this crypto market.
to refer to trading as a game, you need to really be a very good pro in this business. You should practically intuitively determine the points that tell you When to sell, And when to buy.