Best Kept Secret

[Midna]

So you state the game, and what you think is the best kept secret in that game. I'll start.

New Super Mario Bros 2.
Best kept secret: Game Over sreen.

(my friend told me that one) But it is the best kept secret in NSMB2

 

[Lord Regal]

I'd have to say the location of the four gold monsters in LoZ: Oracle of Seasons. Not only are the locations important, but the seasons as well...took me forever to find all four of them the first time I played the game, although the reward was more than worth it. Now it's something I do automatically to get the item.

 

[Hellfire]

tales of the abyss
the battle with the clone of professor whatsherface (lord regal should remember this one too)

 

[Uzumaki Community]

Naruto Storm Generations:How to combo cancel.

 

[ebstiv23]

You can get 100 lives in Super Mario 64 even though the limit is 99 lives.