This must be caused a lot of time using eyes before the computers. If you stare at the computers for a long time, the speed of blinking will be decreased. And the light source from the screen may stimulate your eyes. If you keep on doing this, you will get short sighted. Then the dry and red symptoms may come to you which may let you feel bad. You'd better stop playing video games for a while. Using the eyedrops may help you release your symptom. If you don't rest assured, you'd better go to see the doctor.
The video games are colorful and the rays of light are intensive, under such kind of case, your eyes may not stand. Moreover, the games are tense and exciting, and your eyes can not relax for a long time. In this way, you will easy to get dry eye, which will make you feel pain on your eyes. Eyes fatigue will lead to various kinds of disease such as myopia and astigmatism, they will all lead your eyes uncomfortable, and vision blur. I suggest you go out and take part in the outdoor activities and do some massage to your eyes after long time eyes and relax every 20 minutes. Finally, some eye drops may help you in a short time.