Which games did you most disagree with the market on, whether it was a game you loved that sold poorly, or a wildly popular game that you just didn't like?

What did you love/hate about it?

Basically all the mainline Pokemon games on Switch. They sell a lot but they look much worse than say Wind waker are ridden with technological problems and have a lot of difficulty holding a playable framerate.

Poor timing on my part and really mediocre reviews kept me from playing Mirror's Edge: Catalyst for years despite loving the first game. When I finally did get around to playing it though I loved it too. So what if the world is empty? The visuals and music are exquisite and the parkour is better than ever. The combat could have been better but I'll take it over the first game's incongruent gunplay any day. Whatever its flaws it scratches an itch like nothing else and I find it highly replayable, especially shooting for better times and smoother runs. Wish we could get another one but I"m not holding my breath.

The Devil's Deception Series on Playstation 1-3. Also The Clock Tower Series on Playstation 1-2.
They deserved more love , more sales and more sequels.

I got a couple games that I love but didn't fare well with critics or even other gamers.

First one is Eador: Masters of the broken World. It's one of my most-played games but it only got middling reviews and some truly bad ones due to bugs - the good reviews all looked past them. The bugs are still here for some part and still game-breaking (especially the memory bug; if you play longer sessions at some point a memory error will make all buttons unusable, forcing you to reset the game), but I don't mind them and love the mix of RPG, tactics, civilization and management game.

Next one and certainly a big one is Elemental: War of Magic. Stardock were working for years on this but got stuck on features and released it intentionally in an unfinished state (the developers where so stuck they would never have finished the game). As such, it did horribly among both critics and customers, but I loved it. Stardock later published Elemental: Fallen Enchantress, which was supposed to be more of a DLC campaign originally but totally overtook the franchise, so much so that the original got removed from storefronts and refunded customers afterwards. And while I also like Fallen Enchantress and it's successor, Fallen Enchantress: Legendary Heroes, they both play very differently to Elemental (and even to each other!), so I still wished I had the original game but like I said, Stardock removed it from storefronts. 

Then there's the first Dune game on PC. It's a mostly forgotten mix of Adventure, Management and Strategy, but I absolutely loved it. It's also the first game I actually finished.

Finally, the first Tutles game on the NES. Many seem to hate it, but I actually love it. Level 2 (the dam) is often played up as being super-difficult, but it's actually pretty easy. Level 3 is a maze, but if you know where to go the entire level can be done within 10 minutes. It's only starting level 4 where it actually gets difficult.

I'll also put Jagged Alliance 2 here due to it's US sales. Critics loved it, but it sold badly, especially in the US where sales were catastrophic: It sold only slightly over 25k copies in North America, just one quarter of it's sales in Germany alone. I could never understand why the US rejected the game so much at the time, dooming Sir-Tech as a result.

Probably Splatoon, I just don't really enjoy it. I like the concept but whenever I play it I don't really have a fun time.

Then there's souls likes. I think with these I just don't like the idea of losing all my progress when I turn around a corner for the first time and encounter something unexpected. If you kept all your souls on death I probably wouldn't have just a constant uneasy feeling when playing which I don't enjoy.

Smash Bros

I can't think another game that is so widely acclaimed and so popular whereas being so utterly mediocre as Smash

Mario Kart. I've tried to like it many times but I just don't get the appeal. It has everything I don't like in racing, short laps, wide 'tracks', random weapons, wonky 'physics', flat out driving most of the time.

And of course CoD, generic fps with contrived 'propaganda' missions.

As for disagreeing with the market the other way, pretty much all VR games / VR in general. VR is amazing, much better way of gaming with or without so called VR controls. (Better without imo, unpopular with the VR crowd as well) Being in the game gives so much more accuracy to your actions, so much more awareness of your surroundings and overall so much better immersion. But then I'm blessed with hardly ever having felt any motion sickness.

Of course there are many games I enjoyed a lot that have all kinds of controversial opinions, like Tlou2, Windwaker, Horizon FW, The Last Guardian, but they all sold millions. So not exactly disagreeing with the 'market'.

@Bofferbrauer2 I didn't know the first Dune was rejected by the market, awesome game. I also finished it multiple times. Then when Dune 2 came out I couldn't stop playing that. I even made a level editor for it with visual GUI, taught myself how to program mouse controls to pick up and place elements on the map. (Funny to give the Harkonnen tons of palaces and then watch a barrage of rockets come down all at the same time)

What was controversial about Horizon? 

GTA.

And RDR. It’s all just so boring. There’s plenty more games that would qualify as well.