So I don't know if it'll work that way or not since no one has actually said anything... So now I'm just going to post the Steam keys anyway since I haven't used them.
So, here they are:
Dead Space:
YIVBH-DJEM5-QAX42
Burnout:
QZL3X-II2LT-5MKN5
Crysis 2:
FMYYQ-FRAA0-FNTNB
MOH:
J0370-IGM66-CMPRF
Mirror's Edge:
NETHA-EGEEM-9IQ94
Just let me know if they actually work for one of you guys or not, if they do, I bought a couple of my friends copies as well and I can get whatever codes they didn't use and post them on here and let the others enjoy the splendor.