Plus One

Plus One is a lifeline introduced on the U.S. version of Who Wants to Be a Millionaire? in 2014, replacing one of the "Jump the Question" lifelines.

Usage
The "Plus One" lifeline has a functionality similar to that of "Phone-A-Friend". A friend of the contestant is in the audience. They are often introduced at the start of the show if they start out with a new contestant or when they are called for help. When the contestant decides to use the lifeline, the friend will step onto the stage and try to help them. They will stay on the stage until the contestant either answers the question or walk away.

Like "Double Dip," the usage of "Plus One" lasts until the contestant answers the question, but unlike Double Dip, the contestant is allowed to use further lifelines and walk away.

The lifeline was first introduced for the show's thirteenth season, the last season to use the Shuffle format. It replaced one of the "Jump the Question" lifelines, giving contestants only one jump. It was carried over onto the revival of the classic format in season fourteen.

During special college shows, a lifeline called "Extra Help" was given to contestants which could only be used with the "Plus One" lifeline.