I don't even know what year games came out or when I played them. So, in no particular order, I present the games that have really siphoned my life away:
Alpha Centauri
Sim City 4
Skyrim
Disgaea 1
FF6
Donkey Kong Country 2
Golden Sun 1+2
FTL:Faster Than Light
Legend of Zelda: Ocarina of Time
Rollercoaster Tycoon 2