Question: What error do you get? Can you send me a screenshot? I may be able to help you
If it is "App cannot be opened", try that:
Open a "terminal" window by holding CMD and pressing on space, then type "terminal" (without "") and press enter. A new window opens. Type:
(followed by an empty space) and drag the InsideJennifer.app into the terminal window. It may look like that then:
Code:
xattr -cr /Users/undefiniert/Downloads/Inside\ Jennifer\ -\ Season\ 1/InsideJennifer.app
If it's like that: press enter. This removes the quarantine bit from the file.
Then enter
(followed by an empty space) and drag the InsideJennifer.app into the terminal window again. It should look like that then:
Code:
chmod -R +x /Users/undefiniert/Downloads/Inside\ Jennifer\ -\ Season\ 1/InsideJennifer.app
and press enter, if it's like that.
2nd prompt will be a bit of overkill because it makes EVERY file inside the app executable but it is way easier for people with none or only some knowledge in the terminal.
But you should be able to start the game now.
This fix should work for every RPGMaker and RenPy-Game you throw at it.