Good stunt bike game!
That is what we call: A very good game my friend!
The first 2 levels where the hardest i think, you need to get used to the game and stuff and i did the first levels with that Dyson guy and he was really bad.
After that i mostly did backflips with tricks to get combos.
And when you get far use Acrobat trick+ 2 back flips, just lean to left before a jump when in the air immediatly press 5 for Acrobat trick and then start flipping with the left arrow key, it gave me high points!
I came in the highscore several times my highest place in the higscore was 81.
I like the game play and it's not to easy and not to hard, keep it up!