I tried your suggestions but I too am unable to play this game on Catalina. :(
It doesn't appear, so I googled it and learned Catalina will not run 32 bit programs. I will have to try to open it on an older computer. Bummer.
I'm getting this error message when I try to open it on my Macbook Air (Catalina OS): "Secret Little Haven" cannot be opened because the developer cannot be verified. MacOS cannot verify that this app is free from malware."
