4. Jumping out of water
Though this often appears in massively multiplayer online games, it’s a mechanic that pops up in most open-world games: The ability to swim on the surface of the water, and then to... jump. Like, just to jump up, as though you weren’t wading in water. Not sure what we mean? Well, go find a swimming pool, doggie-paddle out to a part where you can’t touch the ground (and take off your swimmies, you’re an adult for crying out loud), and then jump. It’s fine, we’ll wait here.
Couldn’t do it, could you? That’s because it’s not something that can be done. Sure, if you gain enough speed you might be able to pull a dolphin/shark/Free Willy and get a few feet up, but that’s not what games do; they let you just... jump. This one is just a flat-out failure to follow the basic laws of gravity. That, or the developers that implement the ability to leap out of the water when on the surface haven’t gone swimming in a long, long time.