GTA V's map is massive, detailed and filled to the brim with stuff to do, explore and discover. Countless easter eggs have been found over the years and several mysteries still remain unsolved. The PEDs interact with one another, there are all kinds of nooks and crannies everywhere with a unique hallmark, there are animals prowling the wild — the world is alive and vibrant.

Now, obviously there is more to GTA V than just the map — there's the award winning storyline, a massive number of missions to play, all sorts of side-activities, heaps of cars to steal and so forth. However, some players enjoy hunting for easter eggs and other secrets the most, or they've already gone through all of the vanilla content.
So what can an aspiring treasure-hunter do in-game? Well, there is always the Mt. Chiliad Mystery to sink your teeth into, however considering that investigations in that venue more often take you to the game files and code rather than the countryside, plus any meaningful progress is only really achieved every few months, it may not be the most attractive choice.