Imagine seeing a real alien stomping through your backyard. Now imagine describing what it looked like to a police sketch artist. That is exactly what you are expected to do while playing the frantic drawing party game MonsDRAWsity. One player, known as "the Witness", has twenty seconds to examine a picture of a bizarre-looking creature, then they must describe it to the rest of the players, known as "Sketch Artists". At the end of the round, the witness awards points to the artist who was able to most closely match the monster seen by the witness!
Description from boardgamegeek.com.