Hi,
I'm coming to the end of my first play-through of G&Ks now and just went to upgrade some of my infantry to mech inf and was surprised to find the cost of doing so was zero.
It is actually zero, as no money is subtracted from the treasury, so if it is a bug, it's not just a graphical one.
I'm playing as the Germans, on a large map, 16 civs, 16 city states, low sea level, raging barbs, quick combat, emperor level, epic speed, DX9.
I don't remember free upgrades from inf to mech inf when I played the Germans before G&Ks, so I'm wondering if this is a bug, or if I'm missing some cool feature I should know about?
Thanks!
I'm coming to the end of my first play-through of G&Ks now and just went to upgrade some of my infantry to mech inf and was surprised to find the cost of doing so was zero.

It is actually zero, as no money is subtracted from the treasury, so if it is a bug, it's not just a graphical one.
I'm playing as the Germans, on a large map, 16 civs, 16 city states, low sea level, raging barbs, quick combat, emperor level, epic speed, DX9.
I don't remember free upgrades from inf to mech inf when I played the Germans before G&Ks, so I'm wondering if this is a bug, or if I'm missing some cool feature I should know about?
Thanks!