I like how you tied everything together with a story and how you're mixing all these different genres. The space invaders part at the beginning took a bit long because the level never changed, but afterwards, it was nice and refreshing.
I almost gave up on that "flappy bird" part, though. At first I couldn't make it longer than ten seconds, but it wasn't frustrating enough to stop entirely and in the end, it was doable, so I'd say it ended up just right :)