What stands out the most to me with RDR2 is the amount of polish that went into it. It's incredibly detailed in terms of the mechanics, missions, and just the general interactions you have with NPCs and the world. The story and voice acting is topnotch, although I'm in the camp that feels that Dutch did get a little repetitive at times. There's also something that is so satisfying about the freedom you have to explore and decide how you want to interact with the people and places you discover. And the landscapes are drop-dead gorgeous.