Old time Falcon 4.0 abuser here
Ah, now you are talking. I loved Falcon ST / Amiga (Spectrum Holobyte) but when I saw Falcon 3.0 running on a PC for the first time, that was the day I went out and bought the most powerful PC I could afford at the time. Up until that day I was still using the ST as my main computer for every purpose. There were some good integrated spinoffs for Falcon 3, like FA-18 Hornet and the MIG-29 add on as well. I still have them all somewhere. Falcon 4 was great of course but always pushed whatever hardware I had to the limit and eventually it got to the point where i just could not afford to virtually replace my PC every two years.
I have to say that F15-Strike Eagle II (ST) strikes more of a balance between Game and Sim but that is not necessarily a bad thing, you can still turn the difficulty up to the point where it is not far off a hardcore SIM. It has a nice 'director' mode which automatically switches the views in a context - sensitive way so if you have just released a bomb for example it will switch to show a bomb's eye view of the rapidly approaching target and then a bystander view of the impact and resulting explosion, or it may show you the explosions in an 'over the shoulder' view looking down at the target area past your aircraft. All very nicely done.
Another great 2-player 2-machine linked game is the racing game 'Vroom' which even as a standalone game is one of the smoothest racing circuit games ever seen on the ST, but then add another human racer and it gets even better.
Oh, and... don't forget MIDI MAZE. Multiplayer maze combat with each player's ST linked to the others by a ring of MIDI cables.