One Of Them is currently under development using 2 different engines. The dim3 version is a fully playable demo with a stable script base using OpenGL and compiled for i386. An x86_64 version of dim3 will likely be ready soon allowing the demo to play on future macOS releases. The Unity version using Metal and compiled for x86_64 is in early development stages - see the progress tab for more information.
The current demo is available for macOS 10.14 or earlier. If you'd like to try it out, or collaborate on the project, or give me a job, get in touch with me