There is a mobile mode and computer mode; in the mobile mode there is button with little arrows on them instead of using the arrows keys which mobile devise's don't have. In computer mode you can use all of the arrow keys.
I have added Wall Jumping!! and now made it so you can duck down, using the down arrow key or a button i added in mobile version. there is now four choices of music; -Lets Go! -Plants vs Zombies -big red car -the fat rat