What a unique experience! I love how you were able to implement so many different genres of games! It threw me off when I got to the Space Invaders part. And none of them detracted from one another as you went through the game.
It has a nice, short story too. Consise and to the point. The artwork was all crisp and easy to see what's happening.
My only feedback was that for the Flappy Bird and the one following it, I think the controls should linger on the screen slightly longer and maybe be more visible.