Play a Private match and find the indoor arcade with the tilted televisions and staircase. Locate the bathrooms across from the vending machines and look off to the right. You will see an arcade game labeled "Modern Warfare" (a reference to Call Of Duty: Modern Warfare). Look to the bottom of the machine to see an 8-bit version of Captain Price that is styled the same way as Mario (from Super Mario Brothers). The differences include Captain Price's distinguished muttonchops, hat, and clothes.