Wow. Great question. Minecraft.
But before that?
… It’s been a while. I’ll give you a short lists of games I truly love, and have shrugged off other things in favor of (in no particular order): Fallout 3, Oblivion, Morrowind (Oh God,) Psychonauts, Shadow of the Colossus, Ico.
And close? Saint’s Row 2, and GTA: San Andreas, and sometimes, rarely but sometimes, GTA4.
I’m sure there are tons more, but… That’s off the top of my head.