You can save and load your current game any time by choosing the respective options from the menu of your main window. Please be aware of the following things when saving or loading a game:
Emperor keeps an auto-save file named "last.emp". This file will be regularly overwritten by the program! If you have exited the game without saving, you can always pick up the current game by loading this file.
If you are playing a network game, anyone can create a save file by saving the game. However, to continue with a saved network game, the save file must be loaded on all participating computers, and the network setup dialog must be filled in appropriately. The active player will then be able to continue with his turn, while the other computers will go into waiting mode until it is their turn. Note that it may be necessary to distribute the save file by a file transfer to all participating systems before being able to continue with the game.