Oh hi there, redmaple. Funnily enough, redmaple was a transitional pseudonym of mine between my last main pseudonym, and my current one (which is about 5 or 6 years old at this point, and stuck).

*Ahem*, now let's talk business:

This game of yours is pretty interesting. I thought the graphics felt really smooth, and quite polished actually, with the transitions and stuff like at the beginning when it all opens out. A clean look.

The gameplay totally feels like it needs some accompanying music though, and the speed accelerated too fast. Also, I kind of feel like the visual of the mountains went to waste, as my eyes were on the bottom of the screen the whole time. I think you should have put the z and x markers along the actual slope that the player traverses (x could be grey under the slope line, and z could be white above the slope line), and extended the white of the mountain to the bottom of the screen. Perhaps this way the visual of the slope will help you determine how fast to hit z or x, too.

All in all though, this is a nice entry! Hope to see you around.

Very polished and very nice. Some sort of feedback to show that I got the right keys like an audio indicator would have been helpful but other then that great theme and graphics!

I like the art style. But some music and audio is REALLY missing!

I miss some audio, even some bleep would be good. Nice entry! Maybe you should develop it a little more and make a full hmtl5/flash/mobile game

Nice Idea.

Nice concept but is there actually a use of the Z's and X's? Would also be nice to have the choice for some other keys because Z&X arent that near on a german keyboard layout.