I haven't done this for years... but...
you want to grab the swf file from your cache if you can't download it.
but then you will probably want to setup a very basic html page that you run full screen, then launch it from there with the parameters (thats what you can't get away from). You will have to create your own (google and you will see how)...
but the location I ran it from, they had their own launcher for the adds. Hopefully you can get the params from their launcher (since its generic, I think they are all here )
gameEmbedTag: '<object data="
http://www.nick.com/games/data/icarly/icarly-pakrat/PakRatPreload_Nick.swf" type="application/x-shockwave-flash" width="600" height="450" id="gameSwf" name="gameSwf"><param value="true" name="allowfullscreen"/><param value="always" name="allowscriptaccess"/><param value="window" name="wmode"/><param value="
http://www.nick.com/games/data/icarly/icarly-pakrat/" name="base"/><param value="adloader=true&base=http://www.nick.com/games/data/icarly/icarly-pakrat/&gameName=icarly-pakrat&gameURI=&adfree=false" name="flashvars"/><param value="
http://www.nick.com/games/data/icarly/icarly-pakrat/PakRatPreload_Nick.swf" name="movie"/></object>',
gameAssetUrl: '
http://www.nick.com/games/data/icarly/icarly-pakrat/PakRatPreload_Nick.swf', embedParams: {base:'
http://www.nick.com/games/data/icarly/icarly-pakrat/',wmode:'window'},
gameURLAlias: 'icarly-pakrat',
gameShowAlias: 'ica',
gameWidth: 600,
gameHeight: 450,
gamePerAd: 0,
gameTitle: 'iCarly: Pak Rat',
gameId: 106151,
gameType: 'flashGame',
gameGenre: 'Strategy',
skipAd: false,
adType: 'freewheel',
siteSection: 'Nick__Games',
assetId: 'mgid:cms:item:nick.com:106151',
site: 'nick'
}