Thinking about it there are quite a few for me.
These are just my opinions so don't bite my head off. But if you truly feel you must then... Fuck you.
Bayonetta
Cons:Story is stupid, poorly paced and written, more than half the cutscenes are still image reels.
Pros:Combat is amazing, Bayonetta is amazing, enemy variety is amazing, boss fights are epic and amazing, style and atmosphere are perfect and amazing.
Huh, game with negatives that kill other games for me gets 10/10 funny how that works.
Pokemon
Cons:The grind, oh god the horrible grind, very little to no changes to combat or story per game, still clearly made for kids and yet only players who are older and have patience can truly succeed, no choice to join villains, incredibly campy, random encounters, hit-or-miss minigames, and too many origin stories.
Pros:I honestly don't even know I just know I can't ever let go of Pokemon ever.
I think my pros say more than enough.
Dragon Age:Origins
Cons:For non DnD fans (which I'm not) combat, OP mages on both sides (fuck you curse of mortality), the fade
Pros:Characters, story, lore, and origin stories.
Yup, just four pros curbstomp the cons by a mile.
Dragon Age 2
Cons:Frequently reused map locations, weak story, overarching plot which is barely significant till the end, new Anders (I miss Awakening Anders), warriors are practically useless, rushed third act, and removal of origin choice.
Pros:Characters are developed even better than the first, character loyalty system, armor and weapons use stats based on class, Merrill is adorable, combat is faster and less point and click, and voice acting.
Honestly I can play this game just for the characters they really are good enough to ignore everything else... except Anders because I can't forget how he was in Awakening and I will never ever be ok with what happened to him.
Star Wars: The Old Republic
Cons:Free-to-play (you can never settle after subscribing), similarity to WoW (personally never played WoW enough to see it), typical mmo general chat flame wars, trolls and spammers, loot ninjas, republic has too many stuns often unbalancing pvp, huttball, Alderaan, Tantooine, and limited character creation.
Pros:voice acting, story, companions, unify colors for gear, legacy system, pvp besides huttball, lightsabers, group dialogue roll, Nar Shaddaa, class variety, multiple story lines, and multiple endings per story.
Despite not being the WoW killer it claimed to be it's quality voice acting and story are the things that really keep me crawling back to it begging to see more.
Mass Effect 3
Cons:multiplayer upgrades, characters, and weapons are randomized, online pass, the ending, the starchild, the crucible, and less interaction with squadmates on ship.
Pros:Tuchunka, Rannoch, everything story related before ending, atmosphere, combat, multiplayer, characters, nearly all dlc is free, and character death.
A lot of people hate the ending (myself included) but if the game was terrible then why did they play long enough to get to the ending. Also almost any time a character died it was a very emotional moment and showed the writing at it's best.
That's all I have off the top of my head (my head must be huge).