Take it for what you will: http://blog.brainhex.com/
Certainly not as in depth as MBTI, but quite interesting in its own right.
Edit: I actually found this quite interesting because, while the games associated to my strongest type didn't match well (I very rarely play FPS), games between my top 2-3 types do. Also, some of the other traits I do enjoy, but I get out of my work, like the puzzle-solving of the mastermind archetype.
Here's my result:
Your BrainHex Class is Conqueror.
Your BrainHex Sub-Class is Conqueror-Socialiser.
You like defeating impossibly difficult foes, struggling until you eventually achieve victory, and beating other players as well as hanging around with people you trust and helping people.
Each BrainHex Class also has an Exception, which describes what you dislike about playing games. Your Exceptions are:
» No Commitment: You dislike being asked to complete everything, preferring to pick and choose which tasks you will attempt, or simply messing around with a game.
Learn more about your classes and exceptions at BrainHex.com.
Your scores for each of the classes in this test were as follows:
Conqueror: 18
Socialiser: 16
Seeker: 9
Mastermind: 8
Survivor: 5
Daredevil: 3
Achiever: 0