Odd, I've never had a problem playing Steam games without a network connection. Once in a while it'll sit there trying to connect when I start a game up, but it'll eventually kick over to offline mode. There's probably even a console command to start it up in offline mode, though I've never looked into it.

Unless you're talking about initial game activation right after installation, in which case, sure. Way less intrusive than most DRM schemes, though, IMO.

Well, I've got it all figured out. Just don't specify what the free downloadable content advertised on the box actually is, and then make sure you always have some really trivial downloadable content available. Like, say, a new desktop icon for the game.

There, now you still have your one-use DLC, but you're still providing something after that one-use is to to satisfy the advertising on the box cover.

Huh. Well, my cereal also tells me they're a prize in the bottom of every box. Clearly, they're in the wrong here, because if I open the box, eat a few bowls of cereal, and dig around and take the toy out, then close my box and resell it to someone, the box still says "A prize in the bottom of every box!" How dare they mislead the people I'm reselling to with their false advertisement! Certainly isn't my job to advertise what shortcomings my used product might have.