I feel this game could have been much better than it currently is. Right off at the start of the tutorial I noticed warning was spelled as warnung, no other grammar mistakes seemed to have been made.
The graphics were old in style and reminded me of video games for the older game systems. The game play style itself however made me think of the Shift series but instead of going all over you are only trying to go in one direction, up.
The controls were alright but I feel a couple of things could have been different. X or L to jump and back out should have been X or M to keep users from reaching up to another row. C or K could have been C or B / F or K. The way you reset by using Space is alright as it is. Could have been Enter as well.
The game play itself was kind of aggravating, as soon as you jump, regardless of whether you got up to the next block or not, the screen would start scrolling. Why not have it scroll with you as you go along instead of after the first jump? Aside from that I did not see many other problems with game play. However, at times when trying to jump higher it felt difficult with the block formations regardless of whether or not I switched polarity.
Overall, I feel this game could use a little more work in order to make it a much better game. Have fun with future games!