Great game! Well, I guess i must say great gameS x) That's a very good take to merge multiple gameplay and "simple" yet satisfaying games into one framework. It must have been some hard work to do that much ! On the games side I really liked that you went into the detail that each games has its own music and dynamic. It made it fun to switch from one to another. I also loved the play on words with the names x) I learned i am as bad at Flippy Da Bird than at Flappy Bird. Although I did discover some skills in Planet Defender, not enough to get above F :S
At first i thought playing those games for 12min would be long, but as they are well imlpemented the urge of performing got me hooked more than I expected ^^'
I found the arcade environment to be super nice and the general music too. Maybe a little too dark, though. I didn't get too see much of the unknown figure, but I guess this is also the point.
Anyway great work and congratulation!