Apps similar to Hmmsim Metro include Train Sim World. It's paid, but Open Rails and openBVE are free. Other options are ZUSI 3 - Aerosoft Edition, Trainz Simulator, BVE trainsim and Microsoft Train Simulator. You can choose from more than 10 apps like Hmmsim Metro for Windows, Mac, Linux, Android and iPhone.
Master iconic locomotives on high-speed services, long freight hauls or precise commuter traffic, and get creative with customisation tools in this advanced sequel. Climb into the cab in Train Sim World 2.
Open Rails: free train simulator that supports the world's largest range of digital content.
Enter the virtual cab and experience a train driver’s operations at the highest level of realism. ZUSI 3 is a train simulation for PCs, the professional version of which is also being used in railway companies for engine driver training.
Germany
EU
Trainz Simulator is a commercial train simulator from Australia, which allows users to build, play and operate railways routes in a sandbox environment. Development of the Trainz Simulator series began in October 2001.
Australia
BVE trainsim (formerly Boso View Express) is a Japanese train simulator based on the point of view of the train operator.
Microsoft Train Simulator (MSTS) was a train simulator for Microsoft Windows, released in May 2001 and developed by Kuju Entertainment in the UK. MSTS allowed players to operate a train on various routes in Europe, Asia, and the United States.
United States
Drive massive trains and build your career in a vast open railway network. For both PC and VR.
Train Simulator brings to life some amazing train challenges on real world routes and delivers the ultimate railway hobby.
Discover with TramSim Munich a new city with numerous landmarks as well as the low-floor tram model R2.2.b! Transport your passengers on three detailed tram lines in full length through the centre of the Bavarian capital.
GermanyEU
Loksim3D is a leisure project of railway enthusiasts and software developers, who developed a program to simulate driving traction vehicles. Loksim3D simulates the tasks of a train driver.
Euro Train Sim 2 is the first mobile train simulator to feature officially-licensed real trains from Germantrain operator Deutsche Bahn. Signal System and AI trains.
South Korea
Japan
