There are a few games out there that I know I'll never finish, but will continue to perpetually play for the rest of my life. The greatest offender (in the nicest of terms) for me is Final Fantasy XII; I bought it the day it came out in 2006, and to this day I still play it ten hours at a time in shifts five to six months apart. Even now, nearly two years later, I'm thinking of picking up my old save to try out some of those trickier hunting sub-quests, mainly because my brain has been completely ignorant of the game's story since pre-2007. I know it has something to do with evil twins, but I might be confusing FFXII with an episode of The Patty Duke Show.
Honestly, I can blame Final Fantasy XII itself for my bipolar feelings; director Matsuno gave the franchise a much needed shake-up (which will be all but forgotten by FFXIII), but the game's skill system is in dire need of refinement--which is why it was refined, in a Japan-only re-release. As things currently stand with America's only version of the game, all the characters in your party are basically the same, and any kind of planned specialization soon falls apart when you realize just how counter-productive this strategy is. With the addition of refined license boards built for specialization in the aptly-named Final Fantasy XII International Zodiac Job System, it's possible that XII might actually be my favorite Final Fantasy; but I'll really never know.
Final Fantasy XII isn't the only game that I've had an on-again, off-again relationship with; while there are many games that I never finish and which subsequently haunt my dreams, I've come crawling back to quite a few others after months of downtime.
Dragon Quest VIII is the first one I can think of; nearly an entire year passed between me putting it down and picking it up to play to completion. Even today I haven't finished the post-game content, so DQVIII may end up breaking FFXII's record for the longest period of time I've played a game from start to finish. I had a similar experience with The Wind Waker on my first playthrough; as soon as I could map out every square of the ocean, I did... Only to realize that later in the game I'd have to sail back to every island the map for the various trinkets and doo-dads necessary to complete Link's quest.
My most shameful example: I have a 120+ hour save of Dragon Quest VII on a still-alive PSX memory card; for the past six years, I've actually toyed with the idea of going back to the game. I need help. And maybe you can be my support group. Am I alone in this?
Related Links:
Anticipation Time: Dragon Quest IV
Know Your Final Fantasy IV Trivia. It Could Save Your Life.
Would You Play a Final Fantasy VII Remake? Hmmm?