The work shop doesnt have nearly as many mods as the website. For people who bought it via steam the instructions say to just use the steam workshop. On this website it tells you how to install mods for simple planes. But in my defense, it was on sale) I was exited to get it on the computer for many reasons such as it has more processing power, I can't play it on my iPad any more, and because you can use mods. (Not the best idea, Macs and steam don't really mix. I recently bought SimplePlanes on my Mac, instead of buying it via the website or the App Store I decided to download it from steam.