Two developers from Platinum Games, Atsushi Inaba and Shigenori Nishikawa, were at the Con and they signed a copy of the MadWorld box art at the Sega booth.
Here's a poster that was being handed out around the Rockstar booth:
Here's some pictures of the MadWorld shirt that was being given away:
Here's some pictures of The Conduit shirt that was being given away:
Here's a Fishing Master World Tour wristband from the Hudson booth:
I hope they made sure the Conduit logo has exactly 72 bricks in the pyramid.