RTS games of years gone by, Diablo III, KoA etc.

Ff vi, can't wait to play it again

Zelda games.

Any of the halos

SMB3 - SMB - Zelda Twilight Princess - Super Paper Mario - Mario Galaxy - TLOZelda - NSMB2.

never any Animal Crossing Game!

Quite a few Final Fantasy-games (8, 9, 10), The Legend of Dragoon, Mega Man 2 and 4, Super Mario Bros. 3. There are a number of games I've also played twice that I might some day go back to.

I absolutly hate replaying games or play multiplayer games without real progress. It's feels like a sin to me. There are so many great games and so little time, why spend that time on things you are already done? I always see that big backlog of retro games and the massive amount of games coming out almost every day. (same thing for movies / series). But there are exceptions like metroid zero mission + fusion, older 2d mario + mario 64 + sunshine and in recent years dark souls, castlevania lots(I needed that smooth 60 fps after playing it like shit on ps3) and witcher 2 (2. playtrought felt like a diffrent game).

edit: I forgot rayman origins and dkc returns, I played through both without getting 100% because I got easily frustrated and only completed the main story for the sake of completion. after the easier rayman legends which I completed 100% with every time run, I just needed more so I relplayed origins. while playing tropical freeze and getting every gold medal I felt guilty so instead of completing tp I replayed dkc returns.

Quite a few. So many that I overlook new games I haven't completed.

-Gears of War 1-3 (see sig)
-Batman Arkham series
-Tomb Raider 2013
-Street Fighter 2-4
-Anything with Mario (2D or 3D platformer​/Kart)
-Tetris Attack
-Final Fantasy Tactics

The original Mass Effect trilogy
Final Fantasy VI
Catherine
The Bioshock trilogy
Chrono Trigger
Secret of Mana
Most all Mario games

Does World of Warcraft count?