In a move that seems like a direct response to Microsoft's complex Xbox One licensing system, Sony announced at its E3 press conference today that disc-based single-player games would be freely sellable and tradeable as usual, without a connection to the Internet.

"You can trade in the game, lend it to a friend, or keep it forever," said Jack Tretton, president and CEO of Sony Computer Entertainment.

Sony expects most if not all PlayStation 4 owners to have a consistent broadband connection and said such a connection was necessary to get the most out of the system. But the company stressed that single-player games would still work just fine even when there is no Internet connection. If you enjoy playing single-player games offline, PS4 won't require you to to check-in periodically. "And it won't stop working if you haven't checked-in in 24 hours," Tretton noted.

"The reaction to the used game stuff is easily the biggest applause I've ever heard from an E3 audience," Gaming Editor Kyle Orland noted in our liveblog.

Tretton mentioned Sony received lots of questions about whether PS Plus memberships would carry over to the PS4. His two-word response: "it does." Access to media services doesn't require PS Plus, but Plus members will get perks such as a PS4 title every month for free and exclusive access to Drive Club PS Plus Edition (a huge AAA title). Sony made no official mention of whether PS Plus is or isn't required for PS4 multiplayer during E3, but the company confirmed later in the evening that the service is necessary. (Thanks to commentor thepasswordispassword for the catch.)

After the press conference officially ended, Sony revealed one last announcement up its sleeve. The company had a PS4 video tutorial ready to go: the "Official PlayStation Used Game Instructional Video."