Thanks for the detailed feedback. About 9 lvl. And so it was intended. But I didn't have time to implement the idea. According to the idea, on some lvl it would be possible to collect more than one block (in one pass) .. And you can choose to collect 1 block in each lvl, or if you cannot pass some lvl, you can collect 2 blocks in another. The main thing is to collect the required amount of blocks to hack the system (5 in our case). Anyway, thanks a lot for playing.