There needs to be a 'Joker' element to these games to test adaptability to the enemy and the battle theater.
Asymetric non-state actors do not follow playbooks - their weapons are fear and chaos; their battlefields are anywhere, everywhere, and nowhere simultaneously; their goal is not victory but to bleed their enemy of the will to fight; like in hockey and soccer, they still get a point for a tie.
Example - Iran and its proxies; the Axis of Evil (Iran, Russia, China, North Korea)
America's enemies will be non-state actors fighting undeclared war on undemarcated fields of battle.
Russia's invasions of Afghanistan and Ukraine, and America's occupations of Afghanistan, Iraq, and Syria are demonstrations that traditional industrial wars of attrition offer pyrrhic victories at best.
It's less costly for an opponent to compromise, corrupt, and influence an enemy from within than to invade it outright. That's what China has been doing since the 1990s - tricking its future enemy to surrender its industrial, technical, and economic advantages without firing a shot.
Economics is a weapon of war. Education is a weapon of war. Politics is a weapon of war. Diplomacy is a weapon of war. Statecraft is a weapon of war. China intends to win its war(s) before the first bullet is ever fired.