Once this script completes, you should be able to run Ren'Py using renpy.sh, renpy.app, or renpy.exe, as appropriate for your platform. If the current nightly build doesn't work, please wait 24 hours ...

There are three versions, one written entirely in Ren'Py flavoured Python, another that moves parts of the logic to C and consumes it via the ctypes library, and yet another that uses Cython. The ...