MGS4 is brimming with easter eggs and references to previous Metal Gear games and pop culture. Look for the 'MGS1' flashback sequence in the Tank Hangar on Shadow Moses, or the 'MGS2' flashback in the Blast Furnace. You can find a poster of a certain 'Hideo Kojima' in various locations. There are also numerous humorous interactions with the environment, such as Snake falling asleep in a cardboard box or interacting with certain objects. Keep an eye out for subtle nods and hidden jokes throughout your playthrough. These details add to the game's charm.
