If you want to see these sites in all their glory, you'll need to open them in a browser that supports Flash, such as Internet Explorer 8 (highly recommended for running old Flash content).
These players will play Flash content without needing a web browser. two very early builds of Flash, plus the very latest build of Flash), from Macromedia / Adobe.
Here are three 'Standalone' players, versions of Flash Player 9, 10 and 32 (i.e.