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Gear Mine
Mine
The face of the card (Japanese version)
Attributes
Type Primary Industry
Cost 6
Activation 9
Effect
Get 5 coins from the bank, on anyone's turn.
Mine is a Primary Industry card in Machi Koro, available in the base game.

Gameplay Edit

When the card's activation number of 9 is rolled by any player, the player with the card gets 5 coins from the bank on anyone's turn.

Strategy Edit

The per-turn expected value of the card depends on whether the player uses the Train Station establishment to roll two dice, and how many Furniture Factories they own:

$ value = \begin{cases} 0, & \mbox{if player rolls one die} \\ 5 \times 4/36 + 3 \times 5/36 \times ff, & \mbox{if player rolls two dice} \\ \end{cases} $

Or:

$ value = \begin{cases} 0, & \mbox{if player rolls 1 die} \\ 0.555, & \mbox{if player rolls 2 dice and has 0 Furniture Factories} \\ 0.97222, & \mbox{if player rolls 2 dice and has 1 Furniture Factory} \\ 0.13888, & \mbox{if player rolls 2 dice and has 2 Furniture Factories} \\ 1.80555, & \mbox{if player rolls 2 dice and has 3 Furniture Factories} \\ 2.222, & \mbox{if player rolls 2 dice and has 4 Furniture Factories} \\ 2.63888, & \mbox{if player rolls 2 dice and has 5 Furniture Factories} \\ 3.0555, & \mbox{if player rolls 2 dice and has 6 Furniture Factories} \\\end{cases} $

The card's value is multiplied again by how many Mines the player owns.