Online games is a good way to entertain but it is becoming harmful nowadays. Therefore, it should be banned. First of all, online games affect the young seriously, especially the students. Many students can play truant or steal their parent's money to play online game. This is an alarming situation. Secondly, it is bad for our health. For instance, most of the students who often sit in front of the screen for a long time have eye disease. They also can have problems with mental illness such as addiction, depression, anxiety...Thirdly, many online games are very violent. This is very bad for children. And finally, online games is a waste of electricity, time and money. In conclusion, online games has many bad effects so it should be banned.