Dovetail Games (DTG), a trading name of RailSimulator.com Ltd (RSC), is a British video game developer and publisher. It was formed in 2008 by Paul Jackson (formerly VP at Electronic Arts and Director General of ELSPA, now UKIE), Tim Gatland and Charlie McMicking. It originally produced the RailWorks franchise, now called simply Train Simulator. Developed for the PC, Train Simulator is available both as a boxed product from video game retailers and as a download via Valve's Steam platform.