The only games in that pack that appealed to me on any level were ones I already owned. To be blunt I didn't think a whole lot of the "Potato Sack" because the savings seemed to be in line with their regular sales, and ultimatly it seemed to be getting people to pay to experience their advertising campaign.
ARGs can be cool, but I wasn't impressed by this one, and honestly I tend to prefer there to be a little more to them than just to promote a product.
At least this one DID include some rather interesting content though. Haven't gone back to try it again (if it's still patched into the game) but I think you could have extended "Justine" into it's own game. What's more I'll honestly say that I thought that was more interesting than the actual "Amnesia" game it was attached to.