having the exact same issue on windows 11
when i try downloading on the website it gives me a single file with no way to open it other than what my computer suggests
I remember posting about this awhile ago but i couldn't keep up with the post for personal reasons.
I'm still having the same issue as about a year ago, i'm unable to to download the game on the itch.io app, it comes back with an error that reads something like "cannot download 'build' or undefined".
if i try downloading the game on the itch.io website it gives me a single file with no clear way to open it. it just suggests some apps i could use to see the file, which isn't very helpful.
i'm using the windows 11 OS if that helps, on a device that can run the 'callisto protocol' on medium-high performance, so i don't think it's my specs but hopefully it helps define the issue.
i cannot download the game via the itch.io app or on the itch.io website.
the app gets a bad build read, apparently, and won't bother to install any version (or at least the current version and the one before). the website downloads a .rar file that does nothing but deletes itself and downloads itself again. don't even know where to start :/
instead of giving up, why not release the source code to someone more willing to work on the game? in that case, you can get a percentage of the income for being the copyright holder. on the other hand, you could give it to someone else who would be more willing to work on it. alternatively, you could release the source code for a modding community to make things for the game.