Modern browsers are much more than tools for reading websites. They can execute complex code, render graphics and handle interactive experiences, which makes browser gaming possible.
HTML5 provides important building blocks for web applications and games. JavaScript is used to control gameplay logic, interactions and many other functions.
Graphics technologies also play an important role. Web-based rendering systems allow developers to display increasingly sophisticated visuals directly within browser windows.
The browser effectively becomes a platform between the game code and the player’s device. This allows the same general game experience to be distributed through the web while still taking advantage of the user’s hardware.
Modern web standards have significantly expanded what is possible. MDN notes that today’s web can support high-quality games and even advanced 3D experiences through modern browser technologies.
This development is one reason browser gaming has moved beyond the simple games many people remember from earlier internet eras.