X-Plane is incredibly extensible. You can simulate new aircraft, make 3-D models, or even change the functionality of the program in drastic ways.
Beta 4 of X-Plane 12 Early Access is available on Steam & through the Laminar Research installer. You should be prompted to auto update the next time you launch the sim, if you haven’t already. Here is a link to Early Access release notes. Read More
The entire flight model is based on a new type of memory-access that is fast for the product you get, but slower and constantly self-checking for the internal builds we run for testing. Read More
