IO Games gained popularity in the mid-2010s as a genre of online games that are easily accessible through web browsers. The ".io" domain extension is derived from the British Indian Ocean Territory but has been creatively adopted by developers to brand this genre of games. These IO games typically have simple graphics, easy-to-learn mechanics, and multiplayer functionality.

Characteristics of IO Games:

1. Browser-Based Gameplay:
   • IO games are designed to be played directly in web browsers, eliminating the need for downloads or installations. This accessibility contributes to their widespread popularity.
2. Simple Graphics and Mechanics:
   • IO games often feature minimalist graphics and straightforward gameplay mechanics. This simplicity makes them easy for players to pick up and enjoy without a steep learning curve.
3. Multiplayer Focus:
   • The hallmark of IO games is their multiplayer aspect. They are designed to accommodate a large number of players simultaneously in a shared online environment. This creates a competitive and dynamic gaming experience.