I had a sneaking suspicion last night, but I've confirmed it this morning: Game Center will only list the most recent 29 games you've played. It will NOT count achievements that are NOT in that 29-game list. I currently have 32 installed Game Center-enabled-with-achievements games. I have been unable to get all 32 games listed in Game Center *at the same time*. When I load a game that is not in the list, it will push the bottom game off the list entirely (just now: loaded Super Mega Worm, it pushed Cro-Mag Rally off the list; and again: loaded Cro-Mag Rally, it pushed Enigmo 1 off the list). Always 29 games. I can see the rationale for "only show the games the person has played recently". But, the worst part of this is games not on the list are NOT counted for your achievement totals. For an achievement whore like me, this is absolutely devastating. Sours the experience. Anyone else confirm, deny, rumormill-me-into-complacency?