I guess my original download I copied over to the Amiga was corrupt somehow. I redid the whole thing and I was able to get to the menu.
I don't think the menu is very clear at the moment.
I kept trying to highlight START and hitting fire only to get stuck on a black screen with no loading activity.
It took me several failed attempts to realize I guess MUST enter a level code right now? (It might be nice for these development releases to have CTRL-C enabled to break out.) I went looking in the folder and found the file with codes. By this point I was tired of messing with it since I'm on NTSC and I have to do the early bootmenu for PAL each reboot. I'll come back to it later.
Viewing post in Project Horizon (Amiga) comments
From the menu if you hit fire button the game will start.
You don't "MUST" to give a pass-code. If you do not have one the game will start at the last available/played level (level 1 by default).
About the "blank screen":
It usually comes when you (in case of OS3.2) start the game with the "ProjectHorizon" executable and not with the "ProjectHorizonOS32" executable.
It is becose for some reason (completely beyond our control) OS3.2+KickRom produces a continuous input button signal as if a CD32 controllers third (yellow) button was triggered continuously. The blank screen comes when the game (level) starts and at the same moment tries to show/hide the map (that is what the third button do), but it can't becouse the button leading it to an endless cycle.
The support for CD32 controller was a feature asked by the community. There is no possible way to detect if there is such a controller present or not (to solve the issue inside the game).
The solution should be: As i described before, please start the game with the "ProjectHorizonOS32" executable. And (in case the game has its own partition) modify the starup sequence if necessery .
No other modification is necessery!