>>274190531
>that one game with literally thousands of currency units of train DLC

That would be Train Simulator 2020, of which I am a great fan and have thousands of hours in. It may not be initially obvious but you aren't really expected to buy all the DLC, only the packages which actually contain routes and stock you like. Personally I am interested primarily in classic british steam and diesel locomotives. European and American content doesn't interest me in the slightest, nor do modern engines or cars so I do not buy them. 
That is however an argument for another thread.