Interesting examples you have there. The Last of Us is 10-15 hours long: Short by full-price standards. There's 100 hour games out there, many made in Japan. Th

Interesting examples you have there. The Last of Us is 10-15 hours long: Short by full-price standards. There's 100 hour games out there, many made in Japan. The issue with replayability is that the story is better than the gameplay, and few want to go through said gameplay twice. Skyrim is a game that, shockingly, people still play today. There's players with 1500 hours. It's not my cup of tea either, but putting it as an example of a non-replayable game is more than a little dubious. Especially when GTA V and RDR2 have basically the same practical problem, yet you find them highly replayable somehow. What a game needs to be replayable is a fun gameplay loop that is enjoyable when the novelty of story has worn out. Even simple gameplay loops like the one of Hades can make the gave very replayable. If you like, say, the gameplay of Spiderman for the PS4(another game longer than Last Of Us), playing it again will still be fun anyway. If you are going in it for the story only, it will not. Very few games spend the effort on making all the little decisions have relevant story consequences: Basically all you ever get is illusion of choice. It's the fighting, driving, shooting, or strategizing that has to be so fun that doing it for 100+ hours can be rewarding to some people.