Any game which is slow, dumb, boring, repetitive, or grinding fest
Any game which is hyper-realistics or pretends to be a movie or story.
Any game which has clumsy controls and/or graphics which interfere with gameplay... I'm looking at you, modern shooters with all of bullshit effects and crappy filters of yours.
Any game which is all about blood, gore, and other weirdos of their developers. I don't enjoy puking at all.
Hmmm, so many of them. OK, here we go:
Killzone, Final Fantasy, GeoW, CoD as it turns out to be nowadays, GoW, Bioshock, the most of Capcom ones, GTA.
It looks like I completely can't stand modern shooters.
I enjoy those games which I could immerse in, not in terms of "realism" but in terms of unique game world which does not aesthetically abuse you and game mechanics which is not pendant to wheelchair.
I play to explore and conquer those beautiful game worlds and get pissed off if something so tries to disconnect us :P
