Retrovirus had cards added on July 22, 2013. There are 8 cards in the series, and you'll receive 4 cards at random for purchasing and playing the game.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.