alright, here's how to get the game to work i think

download the game from here https://uploads.ungrounded.net/572000/572865_IPFI.swf?123

then download the flash player projectors here, yes it will be a long 387 mb download because it's a whole kit http://web.archive.org/web/20200522093722/https://fpdownload.macromedia.com/pub/flashplayer/installers/archive/fp_32.0.0.363_archive.zip

you can try downloading a projector from here if the downloads still work though https://www.adobe.com/support/flashplayer/debug_downloads.html

after that open one of the projectors then go to file > open > browse > and select the game, it should run, just click continue through the javascript errors

you can download other flash games from newgrounds, you have to go to the page with the game, and inspect element then ctrl+f for "swf" in the elements tab, the link to the download should be in a block with "swfobject_embed"