Thank you very very much, Don_Adan !!!!!
About 5 month ago, I also played snes version again and again (searched at all platforms!!),too,
because I thought my question(about amiga demo) might be solved
to confirm whether 2nd secret stage exists at the first 6 stages in snes version or not.
Then I got same results, so I am tired about system3 for this reason,too.(this summer)
And I am happy that I can know about all stages about amiga version.
Snes version has 35 stages and secret rooms.
I am a bit surprised that the number of stages are almost same.
If there are some Amiga version exclusive stages, it seems under 5 stages, I thought.
Thanks anyway, mystery is solved.