I know I already made a topic tonight but I really wanted to make this one. Mine is Kingdom Hearts 2, combined with the final mix version I have replayed it atleast 350 times in 5 years.
Hard to say its a tie between Oblivion, Fallout 3, Fallout New Vegas and Skyrim. When a new game comes out I will stop playing, but as soon as I am finished with the game I will go back to a Bethesda game until something else thats worth my time comes out. They are my go to games when there is nothing else out.
http://www.terra-comic.com --> Terra: a Science Fiction Webcomic / Updates every 15th of the month.