On 22 June 2012, the Train Fever team announced that they would need to seek funding in order to be able to develop the final release of their game.

On 14 October 2012, Train Fever lead developer announced that everyone investing €40 (2 shares) or more in the project will receive a copy of the final version of the game.

Reception was very positive, allowing Train Fever to reach the first page of Steam Greenlight "Top Rated All Time" at beginning of February.

On 18 February 2013, eleven days before the campaign deadline, the Train Fever team announced that an institutional investor backed the project for a total of €50,000.

As a consequence, several decisions were made: On 25 February 2013, the Train Fever team announced that the game will be available at release on Windows, Mac OS X and Linux.

On 22 January 2014, another developer update explained more precisely the in-game freight simulation functions, welcoming feedback on the current implementation from the community.

In German speaking countries, the game is also sold on physical media (published by Gambitious and Astragon Software GmbH).

In addition to the genre-typical endless game mode, two historical campaigns offer real world challenges from more than 150 years of transportation history".

The game features many new simulation elements, such as creating a procedurally-generated map at the user's discretion, the introduction of Asian transport vehicles including the 0 Series Shinkansen, and a brand new noise pollution element, the idea of which is that the population reduces with greater noise pollution, meaning the purchase of quieter vehicles is favourable.