I hate my game ADD. I really, really do. How I have managed to (barely) keep my completion percentage over 50% I don't know. I marvel at my ability to play and love a game for 10 hours, then suddenly lose interest once the next "Oooh Shiny!" game comes along.
In the last 30 days, I've picked up Dead Space 2, Venetica, Kingdom Under Fire: COD, Test Drive: Unlimited 2 (I need at least 1 good racer in my collection even if I don't usually play the genre) and Stacking off of XBLA. Good news is I'm more balanced now between my MMO play and console gaming. Bad news is I'm not finishing anything. Halfway through Feb almost and I'm not even close to having a completion. Oh, and did I mention I have Bulletstorm pre-ordered?
What I'd ideally like to do is rip through several games in by back catalogue, to build up my "trade in" pile. Then, next time Gamestop is offering sufficient bonus credit, I trade the whole stash to get something else. Say what you will about trading in to Gamestop, they're far more convenient than Ebaying games, and frankly most of the time I haven't observed the pay to be dramatically different (though selling Deadly Premonition used for $18.50 on Ebay was brilliant).
So, in since I have such a huge backlog of games and recent additions, I've come up with one of the craziest means of picking what I play next: random chance. This is not a long-term committment type system, just a way to decide what I'm playing when I don't have a pre-planned gaming session, or don't feel passionately about what I play. I will roll a 20-sided die (D20) and play the game matching the number I've assigned to it. Note that since I'm not intending to actually juggle 20 games at once, I have assigned games multiple numbers in line with how much I want to work on them.
1. World of Warcraft
2. Dead Space 2
5. Test Drive Unlimited 2
11. Fallout: New Vegas
17. Sacred 2
18. Dead Space 2
Any game finished gets removed from the roll. I reserve the right to change the numbers and games whenever. Again, this is only to get me to pop something in the tray (or log into a game on the PC) if I can't make up my mind what I'm playing on any given night. Yes, I really have a 25% chance of rolling WoW.