Japanese Rail Sim 3D: Travel of Steam (known in Japan as Tetsudou Nippon! Rosen Tabi: Kikansha Thomas-hen - Ouigawa Tetsudou o Hashirou!, which loosely translates to "Railway Japan! Route Trip: Thomas the Tank Engine Edition - Let's Run the Oigawa Railway!") is a train driving simulation game developed and published by Sonic Powered for the Nintendo 3DS in Japan on July 28, 2016 (as a retail release) and in North America on December 7, 2017 (as a downloadable title).
The seventh title in the Japanese Rail Sim 3D / Tetsudou Nippon! Rosen Tabi series (and the sequel to Joumou Denki Tetsudou-hen), Travel of Steam follows the Ōigawa Railway's main passenger line (the Ōigawa Main Line) in the Japanese Shizuoka Prefecture, from Shin-Kanaya Station in Shimada to Senzu Station in Kawanehon. Unlike the rest of the series, this entry has players driving a traditional steam locomotive (the C11 190), including controls to shovel coal into the furnace for speed control (similar to the game Kisha de Go!).
The Japanese version of the game was made as a promotional tie-in with the Thomas & Friends CGI children's television series (as the railway features special real-life events with the C11 227, which is repainted and detailed to resemble Thomas the Tank Engine), and features a bonus game mode for younger players that allows them to drive trains from the series.