railroad tiles world expansionThe World Expansion, the one all backers of this campaign are receiving for free with their pledge, is a special kind of expansion: it is the only one that can be mixed both with the core game and any other expansion (whereas you can only play with 1 thematic expansion at a time). It includes 2 kinds of components: additional Objective tiles and Special pawns. New Objectives The new Objectives included in the World Expansion work just like those