Coolmath Games

Every 7th grader's oasis amidst a desert of geometry and social studies.

Freeze Nova

Another one of those pop up sites trying to evade school's blocking programs. The games are a mixed bag but there are several goodies, including the entire FNaF quadrilogy.

JS-DOS

A browser-based engine that runs old MS-DOS games. It is obsolete now, and there is a new site, but I much prefer the janky charm of the older one ^v^

The internet archive
software collection

A massive archive of retro software- including games, programs, and so much more.