Train Simulator is a Japanese train simulation game series produced by Ongakukan. The game is significant as it was one of the earliest of its kind since the series started in 1995. No versions were licensed outside of Asia, therefore all of Train Simulator games are only available in Japanese, except Railfan: Taiwan High Speed Rail which is also translated in Traditional Chinese and English.

Each game contains Japanese lines and trains, with the exception of four episodes located overseas, in Germany, France, United States of America and Taiwan. Video shot from the cab of the train synchronized with the computer is used as a basis for simulation.

Keisei - Toei Asakusa - Keikyu is the second and last game of the series which came out on the PSP. It's the port of the game with the same name on PS2. It let you drive on the following trajects : Haneda Airport or Ueno - Aoto - Narita Airport.