How to install Mortal Kombat 4 Full RIP:

The extract / unpack the downloaded file
Click 2x MK4.reg
Click 2x Mortal Kombat 4.exe.
If you can not and the message "Not Installed Mortal Kombat 4 ........"
Click 2x MK4_FIX.reg.
Mortal Kombat rerun 4.exe
enjoy