In the description for purchasing the Potato Sack pack of games, it was stated (bold mine):
Plus, if you buy this pack (or have all 13 of these games in your account) you get a potato hat in Team Fortress 2! (Potato hat available after April 5th) and a special skin in Portal 2 co-op.
I purchased the pack, but when I go to the Robot Enrichment screen, there aren't any new skins for Atlas or P-Body. I also searched the ingame store to no avail.
Where, when or how can I get my special skin from preordering?
Best Answer
This was a bit of a misunderstanding. The 'skin' you receive from the potato sack is the flag for the game you played the most. For example, I got a BIT.TRIP.BEAT flag. This is weird, seeing as Portal 2 supports actual skins, but this is what Valve said.