Each game turn simulated one week of the war. Back in my college days, we actually got through most of a complete game, but the German player let most of his Eastern Front armies get out of supply in the winter of '42 - '43, and I (as Russia) annihilated them.
He bowed to the inevitable and gave up.
“...the German player let most of his Eastern Front armies get out of supply in the winter of ‘42 - ‘43, and I (as Russia) annihilated them.”
Pretty much what Guederian concluded in his book “Panzer Leader”.