Who the fuck said multiplayer only? Mass Effect 2 did this for single player. Charge $20 if you want the full single player campaign. (Pirates get it all free). They even put a sleazy used-game salesman on the Citadel who laughs about how the developers don't get a cent of his sales. But those files weren't on the disk, they were an additional 1GB (!) you had to download separately. They could have been on the disk, since they were available at launch. But they weren't. There were some single-player "DLC" packs that came free, recently, that were revealed to be on the disk already, when somebody noticed that this huge "DLC" pack was only a couple of KB. I don't remember the game, though.