It's hard for me to choose just one at times, for either one. So I'll give you two...
Ogre Battle: The March of the Black Queen
A lot of people who owned an N64 probably played "Ogre Battle 64: Person of Lordly Caliber". A good game in its own right, I have to say that "The March of the Black Queen" (N64's prequel) is a lot better in my opinion. It melds together a strategy game with a turn-based RPG. It keeps you involved with managing your units not only for moving on the field, but for battle as well. You see I don't care for a lot of strategy games because after you build your army and get it strong enough you can pretty much wipe out anything, I just find them monotonous and boring, not only to play but to watch someone else play as well.
However Ogre Battle is different with that RPG element, so not only do you have to build your army, but it has to be strong enough to fight in a one on one encounter with another enemy unit. The boss battles, story, music, everything about this game is downright perfect. I absolutely love it... but you don't hear many people talk about it.
This PlayStation melding of survival horror with action RPG elements set in a modern 90's New York is certainly a bizarre one. With most RPG's I'm gonna stand by that this game has a fascinating story that uses science to tell it, but not only that the survival horror elements match well with not only the gameplay, but with this 90's New York. Using Central Park as a scary outlet for this game as well as the Central Park Zoo as a place you don't want to walk through is terrifying and creative. It has gotten two sequels, with the third given the shaft big time.
Any Call of Duty after "Call of Duty 4: Modern Warfare"
Don't get me wrong, I like Call of Duty, and "Call of Duty 4: Modern Warfare" was a huge step in a right direction from its predecessors and built higher on the mark they left behind from "Call of Duty 3" and "Call of Duty 2". It truly was an amazing game. Then "Call of Duty: World at War" came out and gave us Nazi Zombies... okay that's cool. Then we get "Call of Duty: Modern Warfare 2" which was a huge understatement. Seriously all this franchise is riding off now is the Modern Warfare tag of 4 which people don't even care anymore. It's gotten to the point of it being watered down and slowly getting to the point of that of the Madden Series. Don't get me wrong these games are still a lot of fun to play, but the ingenuity is gone. They don't even care about having to top the last game. It's like the Guitar Hero series all over again.
Conker's Bad Fur Day
Yeah I heard a lot about this game, I heard it had a funny story, it had funny characters, it came from the creators of Banjo-Kazooie. So I got myself a copy for the N64 and what do you know... the controls and camera angles sucked. I couldn't really blame myself though because in all the reviews I heard I never heard any praise for the controls or it's gameplay and when I did they just glanced over it. The selling point of this game is the story and characters which I have to admit always has me laughing my ass off, but these controls are not only stiff at times, but the camera just doesn't agree with me at all.
I can't see why this was praised so much, if it was for mainly just the story of cute and cuddly creatures cussing and throwing slurs around... okay, but don't praise it highly just because of that. This game is overrated in my opinion. It just doesn't deserve this high of praise. Especially from the creators who Banjo-Kazooie and Banjo-Tooie. I mean Super Mario 64 showed everyone how 3D games should look and play like. Then Rare came in and showed everyone how to do it better... TWICE! So how did we end up with Conker's Bad Fur Day's controls and camera when this was already perfected? It's fucking bullshit!