It balances civilizations and unit behaviors to make competitive play fair.
1.0c is the standard version for traditional competitive play (though many modern players now use the UserPatch for improved performance). How to Free Download and Install the 1.0c Patch
Use a standard PC with an external disc drive to create an ISO image of your original Conquerors CD. Transfer the ISO file to your modern computer.
: UserPatch automatically bypasses the CD check natively without needing third-party cracked files.