Microsoft sold off the rights to FSX to two parties. Lockheed got the rights to the "professional" version and Dovetail the rights to the "consumer" version. Sa

Microsoft sold off the rights to FSX to two parties. Lockheed got the rights to the "professional" version and Dovetail the rights to the "consumer" version. Same starting codebase, Lockheed released Prepar3d and Dovetail the somewhat successful Flight Simulator X Steam Edition and later the unsuccessful Flight Sim World. I'm sure this is a CYA clause to show they're not stepping on dovetail's license and little else.