Space Empires 4X: Replicators

Space Empires: Replicators, the second expansion in the Space Empires series, adds a number of features to the base game, starting with the Replicators. Von-Neumann Machines ("Replicators") are self-replicating machines that behave, research, and reproduce differently from other empires, while having their own Empire Advantages. Replicators can be used by a fifth player, as an opponent in co-op games, or as a teaching empire for new players as the Replicator player doesn't have to fill out a production sheet or track the technology on his ships.