Hyperactivity in general. Kids get used to having things flash all over the screen, change colors, and be action-packed. No wonder they can’t sit still or read books.
Some games can be quite an ordeal for the brain to take in.
It can affect your eyesight due to strain, and if any history of epilepsy exists, some games can bring on a fit. I am 53 years old and I play on the Serios level of Serious Sam. I have found it to be extremely addictive, sometimes 5-6 hours at a time. I would not reccomend this to anyone. Use your own judgement, and dont stay on too long. It is said Take a 15 minute break after every hour of playing. I reckon that is just about right. The thing is with games, once you sart one you want to complete it at the hardest level possible, without cheating and some games even if you are good can take a whole day to complete.
If your brain is still growing, it changes the brain patterns if you play for more than an hour at a time without stopping.
Blubla