To increase your Websites Loading time, focus on the following

1. Minify Javascript

2. Minify CSS

Avoid flash, if you have on your website

also check from your servers end that there is no delay or lag while loading the website

hope this helps

Flappy was a mobile game which was interesting and fun. I have seen some screenshots too from my friends but its not available for download on mobiles now, but you can always play it online