Which Game(s) Did you Most Spent your Time On and for How Long?

[Proxy-Pie]

I don't know how much time I spent playing Metroid Fusion. But considering the fact that I've been replaying the game over and over again since launch, and the fact that I've already put in 40 hours in it on the 3DS alone since the start of 2014, which is the platfrom I play it the LEAST on, I'd say I put in a huge amount of time in it XD