It depends on my mood, really. Sometimes I wanna play something that makes me think. Sometimes I just wanna play something mindless. But I always appreciate good, creative gameplay. One developer named Sting (Riviera, Yggdra Union, Knights in the Nightmare, Gungnir--pretty obscure games) makes some really unique and complicated gameplay, but I love them. And of course the Souls series (and Bloodborne), which stops holding your hand from the start and just leaves you to learn from dying over and over. Challenging but rewarding.

That being said, games that have stupid or unfair content to make it seem difficult drive me crazy. I've been known to break a controller before. (And have been reeeaaally good at not doing that anymore since those things are bloody expensive.)

And some games are good games only if you stick with them, 'cause they dump so much stuff on you without much explanation. I remember playing Kingdom Hearts: Dream Drop Distance with my friend and I kept asking, "Hey, what's that thing for, anyway?" And every time, he'd say, "I don't know! The game doesn't tell you!"