Shawn,
Oddsoft Ltd
I haven't used it for a while, but as I recall the essential difference between RANT and other flight simulators is that the primary attitude flying is NOT simulated. It allows training in the use and interpretation of radionav aids at all stages of flight. A suite of radionav and instruments is chosen and then can be used to fly en route and approaches. In essence what it does is simulate radionav flight using a basic autopilot interface.
I found it useful in the past.
Because it does not require primary flying of the aircraft, it can be used without needing to have flying controls connected to the computer.