Imperial Fever is a game of Great Power competition in the period 1880-1914. However, the term “Great Power” is difficult to define and open to discussion. The four players in the game take on the roles of the United Kingdom, France, the Central Empires (which for game purposes comprise Germany and Austria-Hungary), and the Emergent Powers (which include the United States and Japan). However, there are other powers, both in Europe and outside Europe, that were very active or important in this period. Russia, Italy and most certainly China come to mind. On the other hand, other powers such as Spain, Portugal, or the Netherlands, had been major imperial actors until very recently and were still active in the international stage. Even Leopold II, the king of a small and recent country like Belgium, secured an important if notorious role in the colonial race starting in the 1880s.
The role of all these international actors is not neglected in Imperial Fever, even if they do not appear as player factions. The aim of this article is to explain and analyse how Imperial Fever incorporates their actions and influence.