Sports Games.

The only games of this genre I liked were a few crazy classics like NBA Jam. The usual crap EA spits out every year could vanish and it wouldn't effect me one bit.

Point n Click.

These I don't really dislike as much as I just can't get into a good number of them. There are a few I really like with my fav being Maniac Mansion.

RTS

Like before, there are a few ones I like, mainly older titles. However the majority I can't get into. Favorite of all time was probably Command and Conquer 1 and Red Alert 1.

MMO's (tried enough to know they all become a grind eventually - lets be honest, its more of a social thing lol)
Myst type adventure games which are more like interactive movies (forgot the name of that recent one which polarised people - is it or not a game?)

There are a few genres I don't like but there is one certain set of games where I just cannot understand why anyone would play them at all: games where you don't really do anything, where the game is just playing you.

You know them, they require no skill, the puzzles don't require any thought, they have badly written stories, are full of cutscenes (preferably in a pretentious art style) and anyone will see the ending as long as they spend enough time. It's just one large ego-trip for the developers who are so full of themselves.

Dear Esther?
http://www.youtube.com/watch?v=--LmQrsD6b0
(athough that's not even a game anymore)

"Anymore" in the sense of how far one can stretch the definition of the term game. Some might say that games like Myst are not really games, but at least in Myst you are pressing buttons and stuff. A game requires the player to make decisions that lead to certain outcomes, all games are highly mechanical. In Dear Esther ther are no decisions to be made. Sure, you have to walk manually, but that's like calling a flipbook a game because you have to flip pages manually. Or calling a chose-your-own-adventure story a game because you get to pick which fork in the road to use.

1. Puzzle games. This genre represents the epitome of boredom for me. There's usually no story, no action, no blood, no weapons, no characters, no setting and no atmosphere. If a game does not have its own "world", I'm not interested.

2. Adventure Games. Strangely enough some of my favourite games belong to this genre. But they are older games (such as the first two Monkey Island games). In my opinion the adventure genre was born from technical limitations of the PCs of the late 80's and early/mid 90's, and as such it should have died out when our hardware got advanced enough to tell interesting stories in other genres. I can't think of an adventure game that wouldn't be better in some other genre - the prime candidates here being the RPG and FPS genres. Basically I think we've moved past adventure games, and when new ones show up, all they do is annoy me with their wasted potential.

3. Platformers. What I said about adventure games is true about platformers too. Some of my favourite games belong to this genre, but they're old games. And in my opinion we should have moved past this genre years ago. In fact, I think we DID move past it. And then the indie-wave showed up and vomited forth more puzzle platformers than we have ever seen. The new generation of puzzle platformers managed to single-handedly put me off indie games for years - only in recent months have I warmed up to the indie concept, mostly due to good stuff like Path of Exile and Torchlight.

Sports: there have been a few exceptions like NBA Jam on the SNES and Speedball 2, but I haven't seen a sports game since the early 90s that did anything to interest me. If I was to make a sports game then it would be like the above and be more like an action game that just so happens to be a sport (or supposed to be at least).

MMOs: you'd have to change a lot to make one of these that interest me. Given that it's the 'MMO' bit that puts me off... well it's not going to happen is it?

Hidden object and other extremely casual games: It's not that I've got something against casual games. But they've got to actually be games, not just things that take up some of your time, but even a jellyfish would complete eventually. Again as above, the failing is too fundamental to fix.

Seeing as we're including gambling-related games, yeah, those too.

Flight Sims

Normally I fall asleep, before I even learn how to lift off. The ultimate boredom in my eyes.

That depends on the criteria for hate. For example, I think that:

RPGs have conflicting and self-contradictory goals and therefore fundamentally suck; However, I consider this genre the most entertaining on average. I'm much more likely to enjoy a random RPG than a random game of every other genre.

Adventures are the opposite of RPGs: the best games are adventures, but the worst games are also adventures, because people have this weird notion that an adventure game is just an animated story interspersed with inane "puzzles".

I suck, and always will, at RTS games, so playing an RTS will most likely make for the worst gaming experience (but I do *not* hate the genre; if I magically became better at RTSes it'd be super awesome), and I'm too impatient to work at improving TBS skills and doing math, so I just look at gamefaqs and then the game is a cakewalk.

I consider most professional sports unethical, so games that license real-world references are also unethical, and those that do not still feel weird. Like how a vegan might feel if offered to eat soy meat substitute that is falsely claimed to be actually sourced from kittens. I dislike shooters for roughly the same reason.

Platformers: same as adventures, except it's even harder to define what makes a good platformer.

Tower defense: same as TBS. I hate math in videogames. I play tabletop RPGs and have absolutely no tolerance for hidden factors that I have to watch out for and research.

Hidden object: there's one feature I like about them - homonyms. However, it has a shelf life / saturation point, and now that it's surpassed, I'm pretty much done with the genre.

edit: typos, damn that new keyboard

I don't know but Master of Orion games are complete poop . I think all the people here that talked about how fun those games are owe me a handwritten apology

RTS - I really tried to get into them (Rise of Nations for instance), but no. It's just not me. I love Turn Based though (like Civilization), but RealTime - no not for me.

Multiplayer games in general. Although I do like a game of PES against someone sitting next to me, multiplayer over the net has never been my thing.

RPGs, University & other commitments means it'll be a while before I can sit down play them, which means I can't remember all the little details of where I left off (e.g. Who I want to be allies with, what my best combos were, relationships with companions, what skills I wanted to level into etc.)

Third Person Shooters, always felt clunky to me, very annoying when enemies come from DIRECTLY behind you

Turn-based Strategy Games, I had some bad encounters and now I can't play one without thinking the AI is cheating

Puzzle Games, because of twisted logic everyone seems to thrive on

Sports games, If I wanted to play sports I'd watch it or go outside & do it myself

I think you're the first to mention RPGs (if we don't count Action RPGs à la Diablo). But then you immediately take it back by praising the genre, heh. :D

Anyway, I feel we might think alike. RPGs and Adventures are my favorite genres, and at the same time I'm often disappointed with them. One reason why I liked Planescape Torment so much is that it's much closer to an adventure game than e.g. Baldur's Gate is. It's still not the perfect mixture of the two, but I'm surprised and sad that hardly any other game even tried to build on that and make an effort to create an adventure game that is closer to RPG or RPGs closer to adventure games.

I'm curious as to what exactly you meant with the conflicting and self-contradictory goals of RPGs, could you elaborate?

Sports games: I just don't see the point of them. If you like to sport, then do it in real life. Except 'cooler' sports, like snowboarding. It can be pretty cool to glide of a mountain and do a lot of cool tricks (in games).

'Fast' RTS games: I really like RTS, but only when I can play the game on my own terms. I won't play an rts where insane speed is the most important, but rather one where I can slowly build an empire, defend from the enemies and then attack them with full force. Rise of Nations, Age of Empires and Company of Heroes are some of my favourite games. Starcraft doesn't seem to be (though I haven't played it yet. But my bad experience with multiplayer RTS tells enough).

Simulators: I don't really see the point of this, except more strategy-oriented games, like Simcity.

There's one genre I enjoy very much but try to avoid altogether, and that's strategy games. They're a lot of fun but the eat free time for lunch.

Genres I don't like include military simulations, whether strategy or FPS, and sports. Well, excluding Wii Sports and that kind of game. I'm also not into street sweeping, garbage pickup or field plowing simulations (and so on; that genre is very diverse), although there's a chance I'll like them if I try them.

Really, I don't think there's any genre I really hate. If I had infinite time to play I'd probably be willing to play through most of them.