In the present scenario, majority of youngsters incline to pursue computer games than that of conventional plays.
... Your sentence is too complex.. Let's simplify it.
Today, it is not an unfamiliar sight to see young children preferring computer games over conventional games.The unprecedented changes in science and technology give rice to the invention of many amusement gadgets, especially gaming devices.
rice??? I think you mean rise... and I think it would be better to use "advancements" rather than "changes"
The rapid advancement in technology have given rise to many amusement gadgets, mainly focused on gaming.For example, some computer games are available in three dimensional formats with higher sound effects and picture qualities, attract a large number of youngsters.
For example, some computer games are played in three dimensional environments, with high sound effects and life like picture quality. These features not only attract young children but also a certain percentage of young adults as well.Playing games on computers or other devices bring about many adverse effects on kids.
... good.
Firstly, it hampers a child's academic excellence to a very large extent.
'... I think "hinders" would be more suitable than "hampers".
For instance, one who plays shooting game continuously becomes less emotionally sensitive to real world crimes.
... very good point.
You have very good points. But they need to be presented in a better manner. Hope this helps. :)