As you haven't mentioned what platforms you have I'll just assume you have all 7th gen platforms. Just to name a few:
Rune Factory Frontier: I'm playing this and am at just over 80 hours according to the Nintendo channel with I'm guessing a fair amount left. One can easily spent 120 hours on this game
Monster Hunter 3: The single player alone will take you 60 plus hours to complete and you can adds hundreds more on if you take this online. If you take to this, this is the only game you need until you recover. I'm sure the regular online players on this forum will take you under their wing
Pokemon Black/White: The main quest will take you about 40 hours and if you want to 'catch 'em all' as the tagline suggests add much much more on. The most deep RPG I've ever played if you get into EVs, IVs, etc
Advance Wars Dark Conflict (DoR in US): I've put 85 hours in since I bought it about 18 months ago. This game took over my life in late 2009.
SFIV/Blazblue/TvC/MvC3/SSBBrawl: Each of these fighters I've put at least 70 hours into (with Brawl crossing the 200 hour mark). Obviously the if you play the available ones on PS3, online is unable atm, but just play the ones not on PS3 instead in the short term.
Mario Kart Wii: With the help of the bi-monthly competitions and online races, this is just below 200 hours for me. With this your recovery period will go very very quickly.
Ogre Battle 64: This isn't a current gen game, it's a 5th gen one. For 1200 points (1000 in Japan and US) it's a bargain. I finished the game on 62 hours, but the addition of several endings adds an incentive to play though it again. There are quite a few sidequests I didn't do as well.
