Most hours spent on one game?

I usually dont play rpg games since they are so long and i cant help but want to do all the side stuff too. So i dont prefer them. But i like it when the main story is lenghty without having too much side stuff. Thats why i love gta games and i finished gta lcs and chinatown wars on psp and they were long for psp games. But the most time i spent on a game was definitely gta 5. I guess mgs peace walker could be second. I am currently playing god of war and i feel like i will spend the most time in that though.