is a very good game, you have to use a lot of mind in each level and set up trial and error strategies to achieve the goal.
I have fond memories of this game.
The final areas are difficult because of the black hole path.
I still play it from time to time, although I delete the save file to start from scratch and enjoy it at its best.
It was an innovative game for its time. I did not remember that the last levels were insanely difficult haha. Thanks for commenting!