You may need a SWF player or Flash file viewer for several reasons:
Gnash is a free, open-source SWF player that's designed to be a GNU alternative to Adobe Flash Player. swf+player+flash+file+viewer+best
It allows you to interact with Flash menus and buttons, though it may struggle with very high-intensity ActionScript games compared to a dedicated viewer. How to Choose the Best Flash File Viewer When selecting your player, consider these three factors: You may need a SWF player or Flash
If you want to view the file and see how it was made, or edit it, you need the authoring tool. or edit it
: The standalone "debug" version for maximum compatibility [13].