Online games in itself are not bad habits

There are a lot of kids who often spend hours and hours just to play games online, and some of these games are quite addictive, especially the ones that are free, that is why I always try to warn my younger brother about games online and to try and stay focused with his studies because once kids play free games online there is a big tendency that they will no longer have good focus on their studies because all they ever think about would be playing games online and on hoping that somehow their level will increase when they check them the next time. Online games in itself are not bad habits, but I am just not agreeable with the idea that kids will spend more time and more thoughts on games rather than their studies because if there is anything that they should invest more on, it would be their studies because it is education which can lead them to greater heights especially with a very competitive world today. My younger brother is good with his studies, but lately that he has been playing online games, I notice a slight drop in his grades, and if this observation is tolerated and overlooked, it could lead to the lost of interest of my younger brother to stay good in his studies, and this is not a good thing for my parents since my older brother and I are both high achievers, and our parents has expectations that we need to meet, as we do not want to disappoint them. Doing well in the academics is not something that our family has forced on us children, and this includes my brother, of course he has time for play, but I just want him to stay focused on his priorities as a student because through this he can do well in life, and doing well in life is not such a bad thing.