The Green Box is an expansion to Cards Against Humanity. Comes with 300 totally new cards to mix into your game (245 white and 55 black). The best expansion we've ever written. Red and Blue Boxes not required, though heartily recommended. Makes your life worth living again for several minutes. 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!