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Subway Simulator: Prague

Subway Simulator: Prague – bringing the Siemens M1 cab to life

An inside look at the Siemens M1 in development: an approximately 80%-modeled cab, interactive controls, physics and train systems.

Since our last behind-the-scenes update, our focus has shifted from tunnels and stations to the train itself. In Subway Simulator: Prague, we are developing the Siemens M1 model, its driver's cab and, just as importantly, the systems that make it behave like more than a moving 3D object.

Every image in this update is from an early development build. Models, lighting, visuals and user interface are all subject to change.

Work-in-progress Siemens M1 cab during a test drive in Unity
View from the driver’s cab during a test run. Both the train and interface are still in development.

The cab is about 80% modeled – the full train is far from finished

We estimate that the cab model is around 80% complete. We are adding controls, the rear panel, switches, indicators and smaller details. This is an informal estimate for the cab model only, not a completion percentage for the entire train.

The train still lacks bogies, passenger interiors, intermediate cars, doors and many exterior and interior details. We are aware of those gaps. Modeling a complete train is one of the most demanding parts of development, especially when its components also need to work inside the simulator.

Work-in-progress rear control panel inside the Siemens M1 cab
Rear cab panel with switches, pushbuttons and analog instruments under construction.
Work-in-progress Siemens M1 front car model in Blender
The front car model in Blender. Bogies, doors, interiors and many details are still to come.

More than appearance: bringing the train systems to life

Alongside modeling, we are implementing driving physics, traction behavior, acceleration and braking. We are also working on electrical power, the train’s sound and instruments that respond to actual simulated operating conditions.

The speedometer already follows the train's speed. A dual-needle pressure gauge displays supply-line and brake-cylinder pressures. Compressors replenish compressed air, while repeated braking consumes it. If the air supply runs low, the pneumatic brakes become less effective in the simulation. Parameters are still being tuned using available technical sources and are not yet fully validated.

Interactive cab and two driving modes

We plan to make buttons, switches and other cab controls interactive. Players will be able to choose between a Simplified mode focused on driving and a Realistic mode that also includes preparing and activating the train and operating its systems.

We are using the technical and photographic references available to us. Before claiming that all procedures faithfully reflect real operations, we hope to review them with an experienced Prague Metro Line C driver. That consultation is planned, not yet a confirmed partnership.

Lighting tests in the tunnel

We are also testing the train lights in the dark tunnel environment. The two images below show different lighting configurations. They are intentionally dark, and lighting will be refined further.

Train front in a tunnel with white headlights illuminated
Testing white front lights in the tunnel.
Train in a tunnel with red tail lights illuminated
Testing red tail lights in the tunnel.

What comes next?

Our immediate priority is to finish the cab work currently underway, connect more controls and refine the core train systems. We hope to share a short video of the train in motion during November 2026. That is a goal rather than a fixed release date: we want to bring the unfinished pieces together first.

Subway Simulator: Prague is being developed primarily for Android and iOS, with a possible PC version later. Thank you for following WAPP’s progress!

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