Kikansha Thomas - Sodor tou no Nakamatachi (Japanese: きかんしゃトーマス ソドーとうのなかまたち, The Friends of Sodor translated in English) was a Game Boy Color game developed and published by Tamsoft that was released exclusively in Japan in 2001.
- Donald and Douglas
- Bill and Ben
The player controls Thomas as they explore the different parts of Sodor. Along riding the track, the player comes across empty spaces where they have to pick the right track piece which fits. As they further explore, the player will meet different characters who will talk with Thomas or might give him a task. The tasks range from a number of mini-games which once completed allow the player to further continue. If the player fails, they must restart the level. There are four levels to start off (Which are the farm, the hills, the docks and the quarry) which the player must complete each one in order. A final level (Which is the town) is unlocked in the end. Other characters encountered are hidden which Thomas must use his whistle to reveal them.
The player can unlock small biographies of each character that they encounter.
- Most of the engine's faces are the wrong color (Example: James' face is yellow, Thomas' is blue and Percy's is green)
- Donald and Douglas do not have their numbers on their tenders.
- Bill and Ben do not have their nameplates.