Mass Mutation draws from a card pool of 422 cards with 250 cards being entirely new.  The general theme of the set revolves around dark AEmber and mutation creating strange, new versions of old characters.  There are also massive single creatures that encompass more than one card and the return of House Sanctum.

The Mass Mutation release has three product types attached to it.  The first product type is the Mass Mutation Two-Player Starter Set which contains two ready-to-play 36-card decks.  Each deck features a unique mix of cards, contains all the tokens needed for a two-player game, and will retail for $24.95.

The Mass Mutation Archon Deck and Deluxe Deck are both single decks which are the core of KeyForge products.  Both products contains a unique pre-constructed 36-cards with new cards mixed in, and Archon Decks carry an MSRP of $9.95.  The Deluxe Deck comes with tokens as well as the deck, and runs $14.95.

Fantasy Flight Games also will release Secrets of the Crucible, a sourcebook for the Genesys Roleplaying System, in Q2 2020 (see "'KeyForge' Universe Comes to 'Genesys RPG' System.").  

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