Reasonable on 26 September 2009
Hybrid FPS/RPG - Deus Ex, System Shock 1 & 2, Stalker, Fallout 3, Vampire Bloodlines: Masquerade, etc. a small niche, but my favorite by far.
Next would be what I'm coming to think of as 'traditional' FPS - i.e. the focus is the SP element, with titles such as Half Life 1 & 2, etc. and adventure titles like Uncharted or innovative titles like Flower.
After that it's strategy, RPG, driving, Arcade classics, fighting, platformers, etc.
There's few genres I'd say I dislike, I just don't have time to play everything.
Try to be reasonable... its easier than you think...
