What's a game you loved playing but never finished?

Bioshock series. I bought them years ago but im still half way on Bioshock 1 and don't touch the rest even though its one of my favorite game series.

Fallout 4. I've been playing for 2 years but I've never reached the last mission, I just do not want to become an enemy for any faction, I just develop settlements and save resources, it's not clear why))

I think it's Skyrim ... I never finished it completely, because I installed a lot of mods on it. This game itself is great in terms of the duration of missions.

I have a bad habit of starting games and not pushing through to the end, still so much great stuff I haven't finished like ni no kuni (and the second one just came out too, needa catch up)