If you've played GTA V before, not much here has changed in terms of content and even if you've never played GTA V, or the Grand Theft Auto series in general, you know at least the basic outline of what you're getting here. Drive around a large, or in this case extremely large open-world map and wreck havoc (or you know, do totally legally stuff like bowling, golf or watch movies). The map here is unquestionably larger than in any game the series has previously seen even though the PC version doesn't technically add any content to it. Don't get me wrong, it's still remarkably impressive, especially when you really get a sense of the scale on missions where you're driving the entire length of it. My favorite way to appreciate the scale and depth that Rockstar put into this game is still to take a plane and just fly over the map for a bit. Don't believe me about the impressive size? Do that and look down and remember that every square inch of the map, everything you see, you can go to. Yep, even the ocean, which comes complete with a remarkably explorable (with the right equipment) ocean floor.
The biggest difference between the console versions of GTA V and their PC counterpart is the ramped up visuals. I don't have the greatest PC setup but I could immediately still see the difference. It's in the smoothness of the character's animations, and the remarkable effects of the draw distance. It's those with really high end machines thought that are really going to appreciate what Rockstar was able to do here. The game can run at a buttery 60 FPS (or more) and 4K if you've got the means to do so, and it's a remarkable experience no doubt. Still though, you'll occasionally see a few hiccups in the visuals like screen tears and slow downs. They don't happen often but they're just reminders that this wasn't originally a PC game, it was a game built for last generation technology.
Like the PC version of GTA IV before it, GTA V allows you to seamlessly switch between using a gamepad and mouse/keyboard in real time, and it'll change how you play some games. I enjoyed the shooting mechanics of GTA V when I first played them (in Max Payne 3 puh-zing!) but they're made remarkably better when using a mouse and keyboard. My accuracy is noticeably better and you'll have a better appreciation for different guns, especially in the first-person mode. That being said though, the mouse and keyboard can't handle the great feeling of GTA V's tight driving mechanics and that's when I found it better to switch to the gamepad (for reference, I'm using an Xbox 360 controller). It was great that the game didn't make me have to switch which one I was using in a menu and I'm able to just keep both plugged in and just switch as I want to.