This page contains a bunch of old Flash games and applications which can be run using Ruffle, an open source Flash emulator. Learn more about Ruffle here. You do not need the extension to run these.
This is a classic Mario clone game that ran in Flash which was apparently released in 2007. I remember playing it a bunch well over a decade ago. The main feature of it was its level editor, which let you create and share levels by copying and pasting long text strings. The author even had a forum for sharing levels, which you can access via the Internet Archive here. Interestingly, it appears that the site remained intact all the way up until the end of 2021, when the site finally went offline. Now it appears to be some sort of news/gambling website. I'm guessing it was made to cash in on the original Flash game, which links to the website. You can see the last time this site was archived here.
Note: I edited the SWF file to remove the links to the original website, as it is no longer up. If you try to click on one of the links, nothing will happen.
Scratch 2.0 was the second major release of the beginner programming language. This release actually runs on Flash to allow it to run in a web browser. This is a modified version from a project called s2online made to allow Scratch projects to be downloaded more easily.
The experimental viewer was an early Flash based version of Scratch 1.4 which eventually became Scratch 2.0. It allowed users to modify their Scratch projects from a Web browser. For more information, check out the Scratch Wiki page.
This is the earliest version of Scratch 2.0 I could find. Several things were changed in later releases, such as block colors. Additionally, the costume and sound editors were not yet present.