Game mechanics that had to grow on you.

[Ayen]

FFXII's battle system is the first one to come to mind. It did take some time to get used to Darksidesr II's gameplay, but that was only because they completely changed genres on me instead of any particular game mechanic.

Did they? Darksiders 2 seemed like a natural extension of Darksiders 1 to me, mostly.

They went from action-adventure to action-RPG. It threw me off at first.