Can any tell me how to get any of these games started on my MacBook? I have no idea how to play these games on my own computer.
The game does not come with the MacOS Renpy runtime files included in the archive (which I think is mainly because the dev does not have access to a mac to do playtests).
However if you do the following it should work:
1. get the Renpy installer (v7.x, not the v8 which is still in beta) and install to your Mac system
2. Open the renpy editor, and make a new game (call it whatever you want). Any choices like screen size or colors won't matter as we are gonna overwrite all the game code files.
3. Copy the contents of the archive's "game" folder into the "game" folder of the local new one you created, overwriting any existing.
4. try running it... it should "just work" (fingers crossed)
However, because the dev does not support MacOs himself, if it doesn't work, you're kind of on your own.