Shooters thanks to the stellar Halo games and maybe RPGs, but the RPGs I've played the most this gen are all Mass Effect games and they are shooters too, sooooooooooooo...

Shooters buy a country mile.

Definitely MMORPG. As for consoles only RPG by far. TPS is probably next then FPS.

Racing probably.
I've played about 30 racing games this gen and pretty much finish all of them. It's the only genre I play online regularly. RPG second, since they soak up time.

I've played more shooters this gen than any other genre, but I think I've actually spent more hours playing RPGs. Only because those games tend to last longer than most others. Dragon Age, Mass Effect, and The Elder Scrolls have stolen so many hours from my life.

Although, now that I think about it, maybe action-adventure is king. Zelda games alone have probably taken around 160 hours. It's a tough call.

Probably Shooter or rpg. Voted fps because it feels like I've been playing too many fps games this gen.

Easily team sports.

RPGs by a country mile:

Dragon Age: Origins 348 hours
Skyrim: 237 hours
Oblivion: ~350 hours
Mass Effect series: ~360 hours total, possibly more if you include ME3 multiplayer.
Deus Ex: Human revolution & Missing Link DLC: 111 hours
Xenoblade Chronicles: ~40 hours
Witcher 2: 30 hours
Fallout 3: 112 hours
FFXIII: 50 hours
Dragon Age II: ~120 hours

So around 10.5 weeks of pure RPGs. That's not including the older games I sometimes go back and play.

It is really quite difficult to work out, but it is probably sports games on their own, just because of FIFA....

But neglecting FIFA, since it isn't a proper game, Steam says my most played games are:

Empire Total War 144 hours
Football Manager 2010 86 hours
Cities in Motion 60 hours
Total War Shogun 2 56 hours
Napoleon Total War 36 hours

So adding in well over 100 hours on Halo Wars, strategy is probably my most player genre. RPGs probably takes the runner up with at least 150 hours on Mass Effect, with hundreds on Final Fantasy games as well. (Oh and Deux Ex, Dragon Age Origins, Witcher 2, Fallout 3, Skyrim and more)

I guess shooter is third, with 100 on CoDs, more than that again on Gears, plus 75+ on Uncharted as well as countless other games (80 hours on GTA if that counts)

So basically, I have played a lot a lot of games... But shooters, RPGs and Strategy are probably the main genres (though I guess it depends on what you count as action games not shooters and then we open a whole new issue...)

During this generation, my most played genre has been Puzzle games and Point'n click games. Last generation however, I played a lot of 3D plattformers.

I beg to differ! They clearly incorporated strategy in Zelda with skyward sword since you can't simply button smash your foe to death; you need to to hit them the right way... say yeah... Zelda's got it all ^^