Paramount will make a third G.I. Joe film, according to Variety.  The decision the weekend G.I. Joe: Retaliation, the second film in the franchise, opened reflects the strong box office (see "'The Rock' Saves 'G.I. Joe'"). The film grossed over $130 million worldwide  from when it opened Wednesday through Sunday.  

One factor in the strong box office was 3-D ticket prices.  The release of Retaliation was delayed for the 3-D conversion and it seems to have paid off.  The three-quel will also be released in 3-D.