Could be a good game if the runner's position were farther to the left. As it is, there is not enough time to see the areas where the vehicles are close together in order to plan where to jump. These areas are hard enough to navigate without the added difficulty of not being able to see them in time. Also, it would be helpful if you could control the length of the jimpls. As it is, it isn't worth more than one attempt at playing.

This game is good. I like the simple graphics and the animation and sounds are cool.
However, there is room for improvement. I didn't like the fact that the stickman was out of my control once I clicked the arrow button. Maybe a system where the player would fall quicker once you release the the button and stay in the air longer if you keep it pressed will solve the problem.
Also, add more stuff to the game to make it more interesting. Till now, the coins will only increase the score. What if I could buy more lives or some improvements with them? Haha
Anyway, keep up the good work :)