Total Recall ending explained (spoilers)

[Johnsonmidge]

Douglas Quaid is really Cole Hauser, a spy for Cohaagen sent to infiltrate the resistance who unintentionally fell in love with Melina and chose to work for them. Cohaagen sends an army of robotic sentries to the Colony via the Fall to destroy the citizens there, but Hauser and Melina blow up the Fall and kill Cohaagen. Hauser wakes up in a medical facility where his wife Lori tries to kill him, but he kills her. Hauser and Melina embrace as Hauser notices an ad for Rekall out of the corner of his eye, subtlety hinting that the whole thing might have been a dream.

[leshanob]

Arnold saves the day by activating the generator that provides Mars with a breathable atmosphere. Its possible that it was all a dream. In the beginning of the film Arnold gets dreams implanted. While doing so, the technician looks at the tape of the implanted memory and says: Blue sky on Mars. Thats a new one. This is the exact ending of the movie.