The Green Box contains 300 totally new cards you can add to your deck of Cards Against Humanity, which is great because you love Cards Against Humanity.- 300 all-new cards to mix into your game.- Our best cards ever, making your life worth living again.- This is an expansion. Requires the main game.- Contains more cards in heaven and earth, Horatio, than are dreamt of in your philosophy.**This is an official copy taken from Cards Against Humanity packed in official authenticity seal.