Replay is nothing to do with game length, it's about what there is to do in the game. Different routes of the story, what there is to unlock, how gameplay can change based on how you play the game.
My most played games this gen.
DA:I - I had my main character plus 5 others, differing builds, differing choices, differing difficulties. etc.
Bloodborne - Same, different builds.
Tekken 7 - Because it's Tekken.
CoD:BO3 - MP replayability, lots of unlock and playing with friends.
Diablo 3 - Grind to get plat... got plat, probably won't ever go back.
I'm currently playing Persona 5, I'm many many hours in and no idea of an end in sight but not sure how/if I'll play it again straight after, the story is a seemingly set one (as expected with JRPGs) which means I won't go straight back into it to play again, with those I break for a bit.
Hmm, pie.
