where are the instructions located?
how can i run the portable version on MacOS?
The instructions are located on the download page, but I'll reproduce them here for you.
For the portable version, you need to install the .NET 6 runtime for your platform(from Microsoft's website), then run `dotnet AnodyneSharp.dll` from within a terminal in the game's installation directory.
This is the best we can do for Mac users, since we don't have Apple hardware ourselves to build+sign an executable.