In case anybody still reads this forum! I've made a few comparisons between the rolling demo mentioned in this topic and the DOS floppy version of Dune on TCRF. I actually started on it when that topic was new, but it's only now that I've really looked into the text. The differences on that page certainly aren't exhaustive, but it's interesting seeing the little ways the game changed in the months before its release. I'm curious as to whether anyone's found anything related to the debug stuff - if there's anything left of it in the final game apart from a few strings. And on the game's main page I mention the game's demo recording feature. I'm sure someone must have come across it before, but I only came across it whlie looking into all this other stuff. I haven't really tested it, but it records all your clicks and menu choices, so if you record yourself saving and loading games, the playback saves and loads games too. It's great learning new things about decades-old games!