Submitted Dave Astle, Mar 25 2004 03:02 AM | Last updated Mar 25 2004 03:02 AM
In early two-player simultaneous games, this message would flash on-screen when the first player received an extra life. Two-up would appear when the second player received an extra life. Since then, it has come to be shorthand for getting an extra life, usually not by accumulating a certain number of points, or collectables, but by finding a special icon. This icon is often referred to as a "one-up."