At the end of each week of passenger travel in Mini Metro, the game provides the player with additions to their metro line that they can make use of. These range from additional locomotives, new lines, specialized vehicles, among others, but the player only has the option of choosing one of two choices that are provided to them. This means the player must determine under their current circumstances which option is going to be the most effective for their metro line to survive another week, while still making the decision feel like a net positive for their current play session.















