Playing falcon SP or MP is no different other than the fact you have a human there with you. MP is where it's at, and you can accomadate much more than 2 players. Want to fly in a package of 16 aircraft all tasked with something different - is can be acheived in falcon.
The heart of falcon is the dynamic campaign and the reason this is still the number one combat flight sim to date. As a pilot in falcon, you are immersed into a war with you being one small part of it. Everytime you go up in the air, you don't know what's going to happen.
Unfortunately 2 people cannot occupy 1 aircraft. With a small modification to some game files, you can unlock all the other aircraft to fly though you only get an f16 pit.
You will need to
forward your ports for MP.
There's so much to this sim that it would take pages to explain it. However, it is not just a jump in and kill stuff game - it is a study sim and will require hours of study and practice to become proficient. Any time you want to hook up I'll be more than help to help you out. I wonder if anyone else is interested in getting in the air...