4. Skydive
...Skydive to the bottom. Skydiving is ridiculously fun in GTA V, and more realistic than it ever has been. Now, you can get kitted out in proper skydiving apparel to look like the true professional you're not, while the physics of this extreme sport have been improved upon enormously. Depending on how high up you are, the amount of time it takes for you to reach the ground is a lot longer. I counted once, and I estimated that it took me around 40 seconds from the point of jumping out of my helicopter to the minute my feet touched the ground. Not 15 seconds like in previous games. Now, you really do get the feeling that you have actually skydived, and the sight of the streets dwindling into a mere spec way below? Stunning. There's that word again.