Convenience- most of the population now has access to Internet. The games are free and easy to play. The convenience is the first reason of popularity.

Killing boredom - television became popular as a medium of entertainment. It gained so much acceptance because it can help us kill boredom. When we do not know what to do, television keeps us busty. Online games are similar but better than television. Watching television involves no other activity. While playing online games involves activity.

Excitement- Most of the online games are exciting. Matching wits with computer has a thrill and that thrill makes the players play more. it is the test of players skill and the computer. That excitement can make people play for hours.

Winning feeling- the feeling of winning cannot be described in plain words. That has to be experienced. When the player wins against the computer, it gives a high and raises self-esteem. It is a great hormone booster.

Nothing becomes popular unless it has value. One can try to sell anything, but success will be achieved only when the user gets a value. Online games have value for users and hence are becoming popular.