The Witcher 3 - the storyline is interesting, with choices, with different endings. Moreover, you can both run it for 50 hours, and delve into the world and study it, spending 200 hours. Quests are huge. I went through this game 6-7 times in its entirety (and the first two were pirated; yes, I like it so much) and every time I found something new. Completely going through everything at once is unrealistic.