For me it was Okami. I remember you do a ton of shit to get to a certain boss which I thought it was the end, only for it to reveal that there was a loooong path ahead.
Other than that, maybe cyberpunk? I was surprised after all that stuff you do in the beginning just to see the titles pop up
GOD OF WAR. Then, the rest of the game was a huge letdown. It was a good game but someone expecting Greek, extremly OP, killer Kratos, came out of that story very dissapointed