It's video based, they took the official sim used for training drivers and made a consumer sim out of it.
If you saw the E233 sims at the railway museum in omiya, it's almost identical.
It works with the zuiki via a steam input mapping.
There's a demo if you want to check it out. https://store.steampowered.com/app/2111630/JR_EAST_Train_Simulator/
