Re:Expansion Genes going to made available for Primordial Soup?
One option to consider. From what I've read the original expansion contained both additional gene cards but also bits that allowed the game to be played with more players. I've read a few reviews suggesting that the gene cards are a worthwhile addition even without adding extra players. From this it seems that an expansion set that would be both cheaper to produce and cheaper to buy would include the cards but not the bits.