Grand Theft Auto V sign, Easter eggs, PS4 game, detailed urban environment, Los Santos cityscape, hidden references, interactive objects, secret locations, playful graffiti, in-game brands, parody posters, UFO sightings, Mount Chiliad mystery, ghost of Jolene Cranley-Evans, sunken UFO wreckage, underwater hatch, glowing bunker, alien egg mission, Bigfoot vs. The Beast, movie references, video game nods, pop culture, Easter egg hunt, dynamic lighting, realistic textures, 3D models, open-world exploration, action-adventure genre, multiplayer mode, high-resolution textures, immersive gameplay, panoramic view, detailed shadows, ambient occlusion.