
If condensed source codes which are less human-interpretable but still machine-readable could speed up the load of a web application then compliance to the standard is not the top priority issue to tackle. However, big companies at the time (and also these days) might think differently. Besides using standard tags and attributes, a part of the compliance could be interpreted as clear and well-structured outputted HTML source code. In the past, some web evangelists proactively advocated compliance to W3C standards. If you also wonder about the javascript code behind the game, you can directly see it from the logo’s directory or review the code here. The way the source codes were written has also undergone changes, from explicit HTML codes to javascript-encapsulated HTML codes. Starting from the doctype definition, it is obvious that the doctype is an HTML 5 one. If we take a look at the HTML source code of Google homepage during the Pacman doodle’s day, we can see that Google has implemented some HTML 5 features in their code. Recent advances in HTML, particularly the development of HTML 5, have brought some cool features enabling modern web application to behave more interactively and similarly to desktop applications. While one may speculate that fancy server-side technologies were used to run the game, the nature of the Pacman doodle’s game is actually plain HTML combined with Javascript and CSS.

It is interesting to know how the Pacman game has transformed from a console-based game into a web-based one.
