An adaption of the game Parchesi. If you already know how to play, it's just as easy. If you don't know, learn. Supplies: people how want to play Parchesi, the game itself, and some brew. Low-mid buzz factor.
Play the game as usual, if you get sent back, or cannot move, take a drink. It's that easy. Good with two players, each player taking two sets of pieces on opposite corners.