I need a great ps3 game that will keep me occupied for weeks?

ive played alot of rpg games on the console (oblivion, borderlands, mass effect, dragon age origins , ect)

but none have kept me occupied for more than 3 days if not less i need a very extreemly long game to play because i can rarely afford to buy oneI need a great ps3 game that will keep me occupied for weeks?
The Orange Box. 5 Games. 30 Dollars. Half-Life 2 with all episodes take about 50 hours to complete, Portal is about 3 hours, and Team Fortress 2 is all out fun. (Internet Required for TF2.)



Grand Theft Auto 4 is pretty fun. The best part of the game is it's physics. The game feels like that is what would happen if it occured in real life.
if you like RPGs go with Fallout 3 Game of the Year Edition and Demon's Souls, DS isnt for everyone but if you like it, you'll love it, its very challenging and difficult (but very rewarding), you have to be a patient gamer for it. If you like Japanese style RPGs, check out Valkyria Chronicles and theres some older one on the PS store like Final Fantasy VII. Other than RPGs, go with Uncharted 2, Metal Gear Solid 4 or Assassin's Creed 2, all epic games. Red Faction: Guerilla is pretty fun too, its an open world, sandbox, 3rd person shooter with destructable enviroments, the main storyline isnt very long but theres a ton of stuff to do and multiplayer is fun, if you're a trophy wh0re you'll spend a long time on itI need a great ps3 game that will keep me occupied for weeks?
modern warfare

or

oblivion
GTA 4I need a great ps3 game that will keep me occupied for weeks?
Call of Duty Modern Warfare 2. you will get hooked for life