For BioShock on the Xbox , a GameFAQs message board topic Just wondering how many extra slots you buy because I don't want to. ok, i've been able to buy extra slots for the plasmids, BUT how do i buy extra slots for the tonics? I have ADAM and i'm ready to buy, but. For BioShock on the PlayStation 3, a GameFAQs message board topic out how to add another slot so I can use all 3 of my current Plasmids. Challenge Rooms BioShock 2: The player can purchase up to four Plasmid Slots this time which, combined with the four Plasmid slots available from the start, brings the total to a maximum of eight slots. You can buy either of two kinds of ability slots -- plasmid special power or tonic passive ability --that allow you to use many talents simultaneously. Dieses Video zu Bioshock schon gesehen? Falling skies staffeln du dein Passwort vergessen? Log In to GameFAQs.