There are eight literal Easter eggs hidden in the most secretive locations throughout the game. Here are eight videos showing how to find them. Note that there is no achievement or other reward for finding these eggs.
Optical
Egg 1
Egg 2
Cubism
Egg 3
Clone
Egg 4
Labyrinth
Egg 5
Egg 6
Egg 7
Whitespace
Egg 8
By Quote
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