So it really is worthwhile zooming in on this level to appreciate the amount of detail Valve wove into these incredible games. Other cool graffiti representing the Resistance are a depiction of human evolution which alludes to the deep-reaching influence of the Combine's tyranny, a solider cradling a baby in front of the word 'Caste,' and depictions of the Combine's Earth Administrator Wallace Breen's likeness accompanied by the word 'Resist.' While pretty much all the graffiti in the games symbolize the Resistance in some way, each is unique. What better way to spread a symbol of rebellion and hope throughout City 17 without attracting too much Combine attention to itself than with an encoded graffiti message? And there's no bigger symbol of rebellion and hope in the miserable Half-Life universe than Gordon Freeman himself. Many of the rebels Gordon meets in the course of his. What a neat Easter Egg! Not only is it super creative on the developers' part, but it also fits in so well with the lore. The death of this character, Arlene, is noted as being the first appearance of the Fast Headcrab. Valve Easter eggs: Portal and Half-Life weapons (Image credit: Valve) Valve may have slowed down its game output considerably in recent years, but its prior titles are still beloved.

Half life 2 easter egg