My top three change on my mood, what I've been playing and what's newest.
Right now:
AS LE (just a ton of fun and my wife plays it too)
GB Premium (still trying to get another 4 billion score)
RZ (new code has brought this to life recently)
Shadow is close with RZ
All time (because they have been around longer)
ST Pro (we haven't been playing this much recently, but played it a ton)
TAF
WOZ