A tourist is a fictive player, recognizable by their name '[Tourist 1]','[Tourist 2]', '[Tourist 3]', and so on. Tourists can buy goods in your shops. They buy their goods most often at the player who has the best price for the goods in that city. Why tourists make certain purchases is not entirely understood, but it is known that the Federals can influence their choice.
Nations do have a tourist budget from which the tourist payments are made. When the budget is negative, tourist will stop buying. The person with access to the finance manager may complement the budget.
Rumours
Nobody really knows how tourists work, but here you have some rumours:
Facts
You are not allowed to make an account called '[Tourist 999]' or any variation of it.