Impulse Game Studios, LLC (also known as Impulse Game Studios or IGS) are the team of people behind 123 Slaughter Me Street series.
According to the official website, the company consists of Nathan Sanders, Matt Damiter, Noah Hayden (GlitchedLizard) and Ryan LaBossierre. They each have a separate job, Lead Developer, Systems Developer, 3D Modeler and Quality Assurance respectively.
Previously John Kolbek was also a part of the company.
Website: http://www.impulsegamestudios.com