I'm thinking of using Wineskin wrapper to run this under macOS Mojave, would it be possible to build a macOS build? (Just saw the .Net issue - might it be possible to build it with Mono framework???)

macOS is definitely possible, I just haven't had the opportunity to make sure it's running myself yet. If you want to try building it yourself with .NET 8, it should be fairly straight forward: https://github.com/ExOK/Celeste64

I intend to release a macOS version in the future once we can be sure it doesn't have major issues.

Can confirm it builds and runs fine on macOS Monterey 12.6.2 using Rider, should be alright to just dotnet build too.

Edit: PS4 Dual Shock controller works nicely too.

Hey! I’ve built it for macOS using GitHub Actions, it’s not the best default .app file (I can’t look for it with .NET publishing right now), but it works (unfortunately only for macOS 12.7 or later because of the Foster framework).

https://github.com/amandamxavier/celeste-64/releases/tag/v1.01