The iFly (now TFDi Design) 737 for Microsoft Flight Simulator X is a payware add-on that aims to provide an immersive, study-level simulation of the Boeing 737 Classic/NG family inside FSX. It’s aimed at virtual pilots who want realistic systems, accurate flight dynamics, and detailed cockpit procedures without requiring the absolute highest-end simulator hardware.
Flight1 uses an executable wrapper. Run iFly_737NG_FSX_Setup.exe as . ifly 737 fsx new