An extended version of the film was released on September 21, 2007 to IMAX theaters. Among the additions scenes:
- Sam's interrogation by the police officers runs longer, ending the detectives showing Sam the famous "This is Your Brain on Drugs" PSA
- Upon arriving at the Hoover Dam, Agent Simmons gives a much longer speech about Sector 7 and what they do.
- When Capt. Lennox acquires the old walkie-talkies from the pawn shop, he's seen arguing with the pawn shop clerk about the price.
The full screen version shown on TV adds two additional cuts to the scene where Scorponok knocks over a water tower in the desert. After the tower is knocked down, Donnelly ('Zack Ward') asks what happened, it cuts to Fig (Amaury Nolasco) who responds in Spanish, then cuts back again to Donnelly. This was most likely done because both actors are visible in the shot in wide screen, but in full screen Fig is not visible.