This is the A-Train Construction Set, a map editor and expansion for the 1992 railroad management simulation game A-Train (originally released in Japan as A-Train III by Artdink). Published by Maxis, the creators of SimCity, this tool allowed players to further customize their transportation empires.

Key Features and DetailsPurpose: It functions as a map editor, allowing users to modify existing save games or design entirely new landscapes and scenarios from scratch.Requirements: As noted on the box, this is an add-on and requires the base A-Train game to run.

Platforms: Released for MS-DOS, The "Big Box" version pictured includes 3.5" floppy disks.

Developer: It was developed by the Japanese studio Artdink and brought to Western audiences during Maxis's early years as a publisher.