First of all playing virtual games are not a bad habit. Be sure to make a time restriction.
Advantages are, they get more competitive more sharper and yes they get to learn more about electronic gadgets and technologies as Mr.Sambit said.
Main disadvantage is, an uncontrolled gaming can make them get addicted to virtual games which will make them less interactions with people and gradually get reduces their social life, which will highly effects their self confidence.
Since it comes under parenting I would like to elaborate more. SOrry if its OT
Congrats., Your kids are now in the 2nd stage.
A SANSKRIT VERSE
"LALAYETH PANCH VARSHANI,
DASH VARSHANI THADAYETH,
PRAPTHE THU SHODACHE VARSHE
PUTRE MITRAVATH AACHARETH"
1st line means, Fondle and love your child upto the age of 5. Here in your case this stage is over and I hope you and your wife must have performed well.
2nd line says, 10 years starting from 5 to 15years of their age be strict with him,discipline him,educate him. Here you have no right to touch your child for beating or hurting inorder teach them discipline. Remember, if you hit them, you failed in parenting. You should be firm with the children, but never hit the children.
My suggestion is, try to collect some educational games and include it in the time frame of playing virtual games, So it will be joyful and useful.
Educate them the benefits of sun and sunlights in our life,wake them up early in the morning just to see the beauty of the rising sun. Actually its not too early, since the sunrises around 6:30am, so if your kids use to wake up in those times then take them out to the place(either terrace, varantha or even outside of the home) from where you can see the sun and let them get exposed to the morning sunlight for sometime and let them get charged with vitamin D. (Teach them the advantage of morning sunlights and the disadvantages of sunlights during noon time for our body.)
Getting up early in the morning yields lots of time in a day. Start introducing yoga and meditation. MAke them do it atleast for small duration just to make it habitual then later they do well.
Start spending money on buying them good attractive books instead of tasty poisonous foods, start with colorful cartoon books (just to make them attracted to books) and gradually get them books which contain good piece of information to their life.
Make a habit for finding the wrong things and avoiding it in life. Train this your kids by saying appropriate stories or real life experience. All you need to do is motivate them.
Remember, Role models of every kids are their parents. Mostly they just wanted to do whatever their parents do. So you will also do also these things to make your kids to follow it
Introduce various forms of talents and give them introductions to it. Dont force, but just motivate and inspire them by showing some good videos. If you found they are getting interested, then help them to get trained in it. which will definitely help them to feel proud and confident by performing in school stages.
& when he attains the age of 16, treat him as a friend,guide him,hear him & mould him to become a good son, a good citizen & a noble man.
Be sure dont reactive immediately with anger or a big NO. Tell them why it is wrong and think do you want a wrong thing to be done?
Teach them the ultimate aim of our life is to be HAPPY and to MAKE OTHERS HAPPY.