For whatever reason I can't seem to find the option for the mongol invasion in the program, I went to full campaign. It wasn't there, historical campaign not there either. historical battles, still no.
I don't see it?
I go to custom battle and it gives me the option to set up a hojo vs mongols, and I can see the Mongolian. units and play with them there, as well as with the japanese crossbowmen.

But I can't seem to find the actual hojo vs mongols campaign.

I have the Total War Eras Version, so it is Gold, so it should be on her somewhere I think?