Games you put down after a significant time investment. Have you ever successfuly returned?

[Summerset]

Final Fantasy 3/6, cause i couldn't beat a boss (that a*hole in the macitek factory)... that was about a year ago and now i'm struggling with the final boss in Suikoden 2 after 40h.

And i didn't like the world-building in Dark Souls 2 and stoped playing after way to much time.