Before you begin Step 3, it is very important to know
which version of Ren'Py you should install. Don't worry,
this is very easy to figure out. If you installed the
Python 2 version of the mod template, you must use any
version of Ren'Py 7. If you installed the Python 3 version
of the template, you must use any version of Ren'Py 8.
Download & Install
Ren'Py. Create another folder in
your Documents to install the software. You can either
download the .exe file if you use Windows, the .dmg file
if you use a Mac, or the .tar.bz2 file if you are on Linux.
Or, you can download the .zip file instead. If you downloaded
the .exe, .dmg, or the .tar.bz2 file, it will prompt you where
you want to install Ren'Py. Select the folder in your Documents
that you created and continue. If you downloaded the .zip file,
you can unzip its contents in the folder you created in your
Documents.
Open Ren'Py and select your language, then click
preferences, and set your Projects Directory by
clicking on "Not Set", and click on the Libraries
drop down, and select the Mod folder you created in
your Documents.
Before you click Launch Project, it is CRUCIAL that
you copy the .rpa files from the original game into
the game folder in your mod template.