Draw Something is a game developed by OMGPOP where two players alternate turns between drawing a picture for the other to guess. The person drawing chooses one of three guess words to draw. Each player earns one to three coins if the drawing is guessed correctly, which build up to eventually allow the player to purchase more shades of color for drawing or "bombs".
The bank of words to choose from includes Star Wars-related material, which is evident based on these great mini pieces of digital art that I found over at Bestofdrawsomething.com.