Just remember that something special happens when you beat each of the 9 games.
Also, to unlock everything, you also need 99999 points in the Daily Challenge. There are 360 extra challenges with the daily challenge; a new one each day for almost a year. The challenges appear to be fixed to specific days and years though; it isn't random.
EDIT> Oh right, hi. I'm Aaron, the one behind this patch. I just put out Patch version 1.2 last night, so I hope that works for you all.