Many Avengers fans cannot wait until May 4 to see their favorite action heroes join forces on the big screen. Luckily for them, they have a chance to attend an advanced screening of the film on April 14.

The Avengers movie has set up a Facebook campaign to thank fans for their support. By assembling the most fans of Facebook, a city can unlock an early fan screening of the movie. Ten cities in total can be unlocked for a screening, with five already been chosen. Congratulations Los Angeles, New York, Chicago, Houston and Miami, reads the Avengers Facebook. You've assembled the most fans on Facebook.

Access to the free screening on April 14 is on a first come, first seated basis. In order to attend an early viewing, a Facebook fan must RSVP to a local screening, but seating is not guaranteed.

If you're city has not been unlocked, there is still time to assemble fans. The Facebook page states that in order to have your city in the running, Assemble your home town friends and have them LIKE the official avengers Facebook page for a chance to get a fan screening.

The last five cities to be unlocked will be revealed on Facebook on Monday, April 9 at 9 a.m.