A GEANT4-based cosmic ray shower simulation in the Earth atmosphere was developed at GSU around 2006, which went through a few updated versions following the major releases of GEANT4 distribution. The collection of screen captures from the ECRS simulation is shown below with different zoom-in scales.

The following list of movies of cosmic ray shower events in atmosphere are created by Mia Boyd, a physics major at Georgia State University.

• Gamma ray display from a 5 GeV proton.
• Charged particle display from a 5 GeV proton.
• Gamma ray display from a 25 GeV proton.
• Charged particle display from a 25 GeV proton.
• Gamma ray display from a 50 GeV proton.
• Charged particle display from a 5 GeV proton.
• Gamma ray display from a 100 GeV proton.
• Charged particle display from a 100 GeV proton.