I really like flashpoint but I wish there was a plugin for curation / recommendation. I have an index of games in my head from my childhood and so does my SO. Together we can play the games we know, but have little ability to discriminate between trash and gem. There are simply too many to reasonably pick at random. The old flash sites offered some curation.
I'm feel old.. My library of childhood games in my head are from the 80s, for the Spectrum. Dizzy, Jet Set Willy, Operation Wolf, R-Type, and original movie/game conversations for Robocop, Batman etc.
What's odd is the apparent chasm between those games and the earliest flash games, but really it's just a few years. That's just a trick of the mind. When you're a kid, turning into a young adult, a few short years feel like a lifetime. Man, it speeds up after that...