: A completely free and open-source classic that offers incredibly deep transportation management without any cost or security risk.

: Best if you want a DRM-free version that you can play offline without any client software.

Since Train Fever is an older title (released in 2014), the developers have released significantly improved sequels. If you enjoy transport simulations, you might find more value in:

: Often includes a Steam key while supporting various charities. Better Alternatives

: The current gold standard for the series with better graphics, more complex cargo chains, and a massive modding community.

If you are looking for the legitimate game, it is widely available on trusted platforms. It frequently goes on sale for a few dollars: