Because developers can upload entire game libraries (HTML, CSS, JavaScript) to a repository and publish them live instantly. Since these are static pages hosted by a legitimate Microsoft-owned company (GitHub), they are often whitelisted by school and office network filters.
While you cannot find a single eternal link, the five collections listed above ( 3kh0 , class345 , lbcannon , tdog2048 , and schoolos ) currently represent the closest thing to a complete "all games" library. github io all games link
Why? Because GitHub.io is a domain for thousands of individual developers. Think of it like YouTube. There is no single "YouTube all videos link"—instead, you have channels. Similarly, each developer hosts their own collection. Because developers can upload entire game libraries (HTML,