Do the "latest-greatest" Trainz versions require the Steam program to work? I see that Trainz apparently uses Steam to download Trainz 2019, but when some of the later versions were being developed it was said that you would have to have a Steam connection to operate these later versions. If so, for those of you who have the latest versions how is that working for you? TS-12 is my latest version to date . I ask because my grandsons play Steam games on my PC. Steam is constantly verifying files and/or downloading and installing updates, usually to each bootup. These can take a long time and slow the PC very much for any other use. Right now I am looking at one such download/update that has been running for over and hour and a half and still has not finished. And, I don't even know what it is installing. I think it must be related to the Steam infrastructure rather than a game, but I don't know because all it says is "Updating Steam, Insatalling Update". Does anyone else have this problem?