Hey!
Thanks a lot for your feedback! :)
I tried the C64, Amiga and Dos versions on real hardware and they work for me.
I have not yet tried the Megadrive version on a real Megadrive, since mine is broken and i did not yet have the time to fix it. Please let me know, if it works for you :)
As for the Atari ST version: This is VERY interesting. I have not yet managed to get it working on my ST 1040, nor on my Mega ST 2. I was not sure if it was due to me being stupid, faulty disks or bad coding. Because of your report i am now 99.9% sure it is due to bad coding and will have a look at it once i have the time.
Thanks again for letting me know and thanks for playing! :)