Topic, Level "Unlock", game "Rolling Turtle"

  i know code look in spoiler
[edit gameinsky]
We do not ruin puzzles of others.

  Check how the green lines on the end point are positioned, like a clock.

  Very unusual concept, quite cool. But: I had to figure out the code by trying, and even now that I know the right code, I have no idea how you could find out by looking at the level.

  ?????????????????

  Hard :-)