Installation and maintenance of computer software featuring immersive technology and entertainment multimedia content for use in the creation and simulation of immersive effects; installation and maintenance of software equipment creating and simulating immersive effects in home and commercial entertainment systems; installation and maintenance of software equipment featuring immersive technology for use in the creation and simulation of immersive effects; technical support services, namely, troubleshooting in the nature of diagnosing problems in computer software featuring immersive technology and entertainment multimedia content for use in the creation and simulation of immersive effects for third parties; technical support services, namely, troubleshooting in the nature of diagnosing problems in equipment creating and simulating immersive effects in home and commercial entertainment systems; technical support services, namely, troubleshooting in the nature of diagnosing problems in equipment featuring immersive technology for use in the creation and simulation of immersive effects; design of entertainment multimedia content for use in the creation and simulation of immersive effects.;