I really liked battlefield 1943 for the xbox arcade I could take a few bong rips then play that game for hours!!

guitar hero world tour and rockband 1 to 3 700days played on both and only 300h on rb3 yes i like thoughs games

its fifa 15 unfortunately

Either Star Wars Battlefront or MW2. Easily over 75 days played on each.

For Xbox my most played game must be MW2 because back in the day I used to always play that either that or Black Ops 2 or FIFA 15 although you can never tell since they don't have that feature on xbox.

For PC my most played game is Counter-Strike: Global Offensive, I have 178 hours on that game.

GTA V and all of the call of dutys!

Destiny or Gta v but probably Destiny

MW2 by far. I had 70+ days just in multiplayer. Second would be Skyrim.

Most possibly gonna be Monster Hunter 3 Ultimate for the Nintendo 3DS, the release of 4 in 4 days will be another long term playthrough
With the Xbox 360 its Oblivion
and the Xbox One It's Ghosts and Battlefield 4

In 2552, the Covenant arrive at the planet Reach, the UNSC's last major stronghold beyond Earth, and launch an invasion of the planet. The last Spartans and UNSC military are unable to stop the Covenant from bombarding the planet. Following directives to avoid leading the Covenant to Earth, Cortana, the Al aboard the fleeing UNSC ship Pillar of Autumn, selects random coordinates that lead the ship to a Halo installation. The Covenant follow, damaging the Autumn and leading its crew to wage a guerrilla war on the ring's surface. The Covenant accidentally release Flood imprisoned on the ring; to nullify the threat, the ring's AI caretaker, 343 Guilty Sparksenlists the help of the Spartan John 117, or Master Chief, in activating Halo.

mine was Halo