The domain io was chosen as a memorable domain with the goal of 'looking cool.' To be fair, it does appear to be more futuristic and refreshing than.com or.co.uk!
It is, however, essentially the same as having a country's own domain. Consider the.de and.jp domains in Germany and Japan, respectively. Many computer companies are capitalizing on this by registering the io domain.
The ease with which some of the numerous io games can be played is incredible. They may be played for free on a number of websites. And that is a huge part of what sets an io game apart from the rest.
The free, frequently multiplayer-based, and casual nature of the io genre defines it. In the order in which I listed it.
Overall, io is a new and exciting subset of online games, and you might be wondering where to begin. I've put together a list of seven things you should know if you want to work as an io games developer.