Is there a way to check on 360 and PS3? The only ones I know you can check are Steam, 3DS, Wii U
3DS: Fire Emblem Awakening (199 hours 58 minutes)
Wii U: Super Smash Bros (598 Hours)
Steam: Skyrim (177 Hours)
This is just newer games though. For older games I have no idea what my hours would be but I'd be willing to bet more smash bros (Melee and Brawl) Tales of Symphonia, The Legend of Zelda Twilight Princess, and Sonic Adventure 2 would probably fit in there somewhere.
I did play a lot of PC star wars games when I was younger too with a lot of those games like Battlefront 1/2 and Republic commando getting many hundreds of hours and the MMO Star Wars Galaxies getting 1000s of hours.