This game was developed for educational purposes for Bit By Bit (http://littlebitbybit.org/\). Worldwide high scores aren't available yet, but based on my personal experience of watching other people play, the current record is 429. Have fun!
Whenver I hit the up arrow button, my page scrolls up. i know that there is a way to prevent this through coding. You might want to consider this?
@vedprad1, the line of code isevent.preventDefault();