User blog comment:Willbachbakal/Co-Op Plasmids/@comment-3195894-20110726194335/@comment-1330314-20110727065604

Yes, although how you use your Plasmid depends on how you upgrade it. The way I imagined it, each of every Plasmid's three iterations is supposed to work and feel like a new Plasmid in its own right, so even if the two of you purchase the same basic version you'll still be using it differently in the end. That way, you could replay the same campaign over and over again without getting bored with your Plasmid toolset.