350 hours over 14 months on BeamNG alone. (I never idle any games.) But since I've gotten Beam, I've also logged 300 hours on Live For Speed, 170 hours on ATS since it released (their map in Beam = best simulator ever), 72 hours on ETS2, and around a dozen hours for a whole bunch of other games. The first 3 I mentioned are my favorite and it's hard to pick one.
My play time is inflated because I idle games. if the game isn't in a cut scene or doesn't see input for 5 minutes the timer should stop. I have thousands of hours on beam but no idea how many I actually played.