Star Realms Frontiers is compatible with the Star Realms Deckbuilding game, and features:

• Great gameplay for 1-4 players.
• Solitaire and Cooperative mode!
• Plays on its own, or combined with any other Star Realms set.
• An all-new 80-card trade deck featuring some new mechanics like the double ally abiltiy which really rewards you for focusing on a single faction!
• Starting decks for four players.
• Four sets of new, easy-to-use score cards. 
• Plenty of Explorer cards.
• Full color rulebook for two player PVP games, and awesome multiplayer formats like Free-For-All, Hunter, and Hydra!
• A sturdy, attractive, 4" x 6" x 2" game box