First game you ever completed?

[7MightyKarts]

I think Pokémon Sapphire if you mean storyline completion.
If not, then it was Paper Mario: TTYD.

 

[Mizore Ice]

Uhhhhhh...it may've been either Paper Mario or Super Mario World. I'm not too sure.

 

[charles109]

Super Mario 64 for the Nintendo 64.

 

[mostachedpolar]

Jak & Daxter: The Precursor Legacy.

I bet it when I was 5, it was and still is an epic game to play.

 

[Chef Torte]

I think it's Paper Mario 64.

 

[Wafflenator]

Super Mario 64! The ending was like a second birthday to me.

 

[Luma Party]

Super Mario Bros. (original NES version).
I felt like new human being.

 

[Toadette]

New Super Mario Bros. DS. My parents usually finished my other games because I was little and got distracted easily.

 

[Snowy620]

Legend of Zelda for NES.

 

[Demonfox69]

pretty sure it was super mario world

 

[Chubbo1793]

Legend of Zelda for NES.

Silly Snowy, you already posted that. =P