Is there any difference between the DVD and retail versions?

Bobbin

Besides the fact that the retail one comes on CDs.

Molokov

The extras are different, but the games are the same.

This has come up many times before. A quick use of the search feature found these threads:

http://www.telltalegames.com/forums/showthread.php?t=7307&highlight=retail+difference

http://www.telltalegames.com/forums/showthread.php?t=3318&highlight=retail+difference

City Of Delusion

There's more extras in the Telltale DVDs.