In any given situation, there's a game jam for that. There's probably even a game jam about whether something is a game jam or not. There's definitely a game jam about trains. It's called Train Jam (opens in new tab), and it asks its participants to spend 52 hours making a game on a train.
Mark Ellis: Train Bridge Inspector is just one of the many games to come out of this process. Made by Adriaan de Jongh and Vlambeer's Rami Ismail, it casts you as Mark Ellis, the titular Train Bridge Inspector.
Your job is to assess a procedurally generated bridge, and determine whether a train can safely make it across. Whatever you pick, the train will make an attempt—leaving you free to watch a massive disaster while smugly revelling in the fact you warned against it.
The bridge is unstable more often than not. Really, the question is whether it'll collapse before or after the train has made it across. Still, it's plenty entertaining for a game in which all you do is click a tick or a cross. You can download Mark Ellis: Train Bridge Inspector from Itch.io (opens in new tab).
Thanks, Crate & Crowbar (opens in new tab).