When you consider how few
realistic flight simulators (not arcade games) there are, and even M$ has shut down further development of theirs, it's no surprise there aren't all that many, less glamorous, truck simulators.
I for one would love to see a very realistic truck simulator, without Rig'n'Roll's game elements, but with realistic gearboxes (including mis-shift grinding), two-speed axles, braking, temperatures, etc. But perhaps Rig'n'Roll will pleasantly surprise me when (if?) it finally arrives.
But for now, even though it is still under development, and lacking in the graphics department, I'll put my money (although it's freeware
) on
Rigs of Rods