To the Right of Mass Effect is a 2nd Mass effect case that I got from Gamestop as a pre-order bonus, it includes behind the sceens videos, gamerpics and other stuff similar to the LE's bonus disc... there is some overlap but it's mostly unique content. there are pictures of this case on the Mass Effect NTSC page.
to the right of that is a plain black case with the game disc.. you'll notice a lot of my games have one of these, I do this so I don't ruin the CE case by constantly opening and closing it...
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I don't know what came with Robotech, it's still sealed
that game is numbered... one of the very few CEs to come with a quantity label (the only other one I can think of is Halo Legendary which has the number on the back of the helmet stand)