[Tangram]

When I was a kid, I played the old games a lot. I played the American original a ton of times, and the Japanese II-IV several times (my aunt-by-marriage is Japanese, and so got me the games and told me what they said). I never played another one until last year, and that was XII. I also got the III remake for the DS. I've loved all of the games that I have played, and recently ordered VII and X for bargain prices. I look forward to getting more into the games. And I definitely look forward to XIII.

As for what ties them together...it's the feel, for me. The feel of playing the original and playing XII were so similar to me.