Hexoshi has not had an official release yet as it is still in a very early development state. However, you can download the source code from the Git repository, which can be found here:

To run the source code from the repository, in addition to Python and Pygame, you will need to install several packages that are normally bundled in with source releases. The easiest way to do so is with the following command:

python -m pip install pathlib six sge-pygame tmx xsge_gui xsge_lighting xsge_path xsge_physics xsge_tmx