Really great work, thank you!!
I've tried the .crt version on a C64 Mini.
For the player selection to work in Bruce Classic where you need to either press F1, F3 or F5 I have made a .cjm file with the following content:
T:Bruce Lee Duology
Y:2019
X:pal
J:2*:JU,JD,JL,JR,JF,JF,JU,JU,,F1,F3,F5,SP
Just copy/paste the above in a text-editor and save.
The filename needs to be the same as the .crt filename, just with .cjm as extension. Just make sure that there is no hidden extension, like e.g. .cjm.txt !
The .cjm file needs to be in the same directory as the .crt file.
On the Bruce classic selection screen you can now press the leftmost button for F1, the second button for F3 and the third button is F5.