On old user, searching for help

Hi Whiskers
RTR does run on windows 10, and nearly sure it runs on windows 11.
As for models there is a huge range of models available , just ask for what you want and they are all free.
There is a mini RTR which is also available this version has no models in the program, it’s ideal for starting a new , this version comes with the basic elements such as track etc
and comes with its own password.
If you need any further assistance just ask.

Kindest regards Jnr