777 Immersion is an extension of SimFX which needs to be purchased separately An All-In-One Boeing 777 Effects Package. 777 Immersion is available as a single package for all popular renditions of the 777 airframe, regardless of livery used! Enjoy immersive effects for the PMDG & CaptainSim offerings, customized for each. Performance First Performance is our top priority at //42. 777 Immersion uses minimal system resources, allowing for high-quality and FPS-friendly gameplay. W... 777 Immersion is an extension of SimFX which needs to be purchased separately An All-In-One Boeing 777 Effects Package. 777 Immersion is available as a single package for all popular renditions of the 777 airframe, regardless of livery used! Enjoy immersive effects for the PMDG & CaptainSim offerings, customized for each. Performance First Performance is our top priority at //42. 777 Immersion uses minimal system resources, allowing for high-quality and FPS-friendly gameplay. With rigorous flight testing, our product offers maximum realism for customers.