Games that you consider yourself an "Expert" at

[KingBowser24]

As a gamer, you will most likely have that game, or several games, where you are sure you know every secret, how to do this and that, the game that your friends always ask you for help in.
What's that game(s) for you?

For me those games have to be:

Mario Kart DS, Mario Kart Wii, and Super Smash Bros. Brawl: I've beaten and unlocked everything in these games several times over. I will probably whoop you at these games like all my other friends

Fallout: New Vegas: Ive literally beaten this game over a dozen times, and done probably close to every mission. I've also beaten all of the DLC's, at least twice for each one.

Super Mario 64: I've beaten both the original and DS versions several times. Right along side Burnout: Revenge as my favorite game of all time.

Burnout: Revenge: This game is hands-down my best game. I've had it since it first came out back in 2005, and I've beaten it and unlocked everything several times over. This game was my childhood, and it is still fun today!

As for Fallout 4 and Skyrim, I wouldn't say I'm an expert at them yet, but I'm getting there...

[Artemis008]

Mario 3
Iv'e played every version and currently own it on my computer, wii, phone, and 3ds. The best way to play is using the OG nes version with a battery hack.

[ElectriKong]

I would say NSMB2 and Wii: 100%ed both games (excludong the DLCs of NSMB2 tho)
SMG Games: Fully completed those 2

[HeroLinik]

The later Pokemon games, pretty much. As soon as you start getting into competitive you start to learn all the inner mechanics like EV training and IVs, and knowing this alone, as well as making use of it, can help you win a lot of Wi-Fi battles or at least get a grounding against more experienced players. Also, I do love myself some Link to the Past, and I've replayed it several times and I still manage to remember where most of the heart pieces are, or even beat the game without a guide. However, don't even get me started on the Ice Palace...

[ElectriKong]

I mean most of the MK games I own I would consider my self an expert on single player in 50CC and 100CC, not so much above that, and I have not done much online MK either.

[Danny]

All of them.

[Julia Pseudo]

The earlier Mario Party games are definitely this to me, as is Pokémon since Generation 3 for similar reasons as Linik described. I also have a lot of technical knowledge about Super Smash Bros. although I'm not really very good at it at a competitive level in reality.

[FireyPaperMario]

I'm an expert at the Super Smash Bros. series! But not only a expert at the game, I'm also a Super Smash Bros. Veteran

[ElectriKong]

I would say any game I 100%ed I would call myself an expert at.

[Cedur]

Sonic Heroes I'm still a master at although I haven't played it in months (screw you, broken down arrow key)
I made some great scores.

[Drluigi]

I'd say if anything, I'm an expert at Smash 4. I'm a Sonic main who plays on Anther's Ladder pretty much daily. I just love playing Smash 4 competitively and I hope to one day be able to go out to local tourneys and make a name for myself someday.

[Imaynotbehere4long]

SMBX 1.3, pre-LunaDLL.

[Zeldamaster12]

Zelda: I've been playing Zelda since I was 4, and I've beaten nearly every single game in the franchise.

Call of Duty: Been playing it since MW2, and as of now on Infinite Warfare, my kill/death ratio is 2.29. That's really high for a shooter game.

Pokemon: While I don't know jack about IVs, natures, breeding, etc, nor am I able to play competitively because I've always been more of a casual player, I've literally been playing Pokemon my whole life, and I feel I'm pretty darn good at it.

[qig]

Pokemon: While I don't know jack about IVs, natures, breeding, etc, nor am I able to play competitively because I've always been more of a casual player, I've literally been playing Pokemon my whole life, and I feel I'm pretty darn good at it.

"i don't know anything about the actual challenging/complicated parts of pokemon but i sure am an expert xD!"

[RPG_Magician]

Hmm. I once completed Kirby Squeak Squad 100% with all collectibles in one sitting and it took me 12 hours. (The Time Attack Mode)
Needless to say, I had a lot of time as a kid.

[Artemis008]

I beat fallout 4 three times, the second run I also beat every quest.

[MECHDRAGON777]

SMBX. Not much to say really. It is more in lines of playing and not making though. However, I can decipher almost any level made (before lua) except for Imaynotbehere4long's levels. With Lua, it is not much different. I can almost say a few Final Fantasy Games such as Final Fantasy X, but I am not as good as I am at Super Mario Brothers X...

[Ecruteak]

Zelda II. I've beaten it several times without savestates, and the fact that I consider Death Mountain really easy probably helps.

[KingBowser24]

SMBX. Not much to say really. It is more in lines of playing and not making though. However, I can decipher almost any level made (before lua) except for Imaynotbehere4long's levels. With Lua, it is not much different. I can almost say a few Final Fantasy Games such as Final Fantasy X, but I am not as good as I am at Super Mario Brothers X...

I'm the same way, I'm not a great level designer, but I certainly know my way around SMBX, in terms of features and the "how to" aspect of it. I've been using it since 1.2.2 back in 2010!

[MacDuckBeat]

For me,it would be:
SMA2: Super Mario World. Even though I didn't finish the game 100%,I may beat it some day if I have more time. Pretty much,I love playing with swapping character,Luigi's high jump would be a slippery tho. I actually pretty hype when he's flying with cape feather really high.

SMA3: SMW2 Yoshi's Island. This would be the same with the SNES version of SMW2 - YI,I actually liked his fluttering ability. OMG,it's looks like my first time ground pounding on 2D game(s). It was an awesome feature duh.