Probably meant the defeated timeline. 

I heard the last Army of Two game has an evil wins ending. Never played that series, though.

This man loses in the end, but he did succeed in his evil plans in the game and rose to awesome power.

Kefka from FFVI >: ) I love this twisted evil clown man. One of my most favorite villians EVER.

I...guess. But that's something you couldn't tell by playing Ocarina of Time.

What about after the after the credits roll?

That's a fair example now. But as I said, it is not something one would get just by beating Ocarina of Time alone :P

I always felt like evil won in FFVII but then Advent Children ruined that for me. I thought everyone died except Red XIII for years.

Actually, Evil triumphs after the credits roll. Ganon came back to destroy everything and that's why the goddesses flooded Hyrule. All that thanks to the adult timeline :)

The Last of Us.

Brood Wars and Diablo.

Nah, Revan bugs out soon afterwards and the whole thing plays out almost identically to the Light Side ending anyways.

Gamers certainly lost in that timeline, yes.

Ganon still gets sealed by the sages, and we get most of the best Zelda games, so no.