Its not for the faint hearted but it does show how to program correctly.
I helped to find bugs in the Source so I only played a small Part.
but this is a commercial product which may help you understand the control flow of a program.
Link:
http://purebasic.myftp.org/files/76/Steg_the_Slug.zip
The person that programmed the Game can be contacted at
http://www.my-software.co.uk/
Enjoy!
Regards
Kevin
