Columbia Pictures has unveiled a second trailer for "Pixels" showcasing the humor, action and fairly impressive CG effects of the upcoming sci-fi comedy.

Directed by Chris Columbus, "Pixels" stars Adam Sandler, Josh Gad and Peter Dinklage as old-school, t arcade champions called upon by the president (Kevin James) to save Earth when aliens misinterpret a time capsule launched into space in 1982 and attack using the forms of some of the classic video-game characters found within.

Opening Aug. 14, the film also stars Michelle Monaghan, Brian Cox, Ashley Benson and Jane Krakowski.