You mean videos of players using a game developed in Adobe Flash ?
It's like checking out the weather forecast of Zanzibar, of 3 years ago...

Seriously, I think players don't care in which architecture their favourite games has been developed. They just wanna play ! As a matter of fact there are such videos:
Youtube Candy Crush - Google Search


Oorspronkelijk geplaatst op Quora: Why aren't there posted Adobe-flash games on YouTube (besides me for trying at least)?"