Note: This procedure requires editing a registry value; do not attempt this if you are not familiar with working with your system registry, as a mistake can cause serious problems with Windows. Start Regedit and use the "Registry/Export Registry File" menu option to create a backup copy of your original registry. Go to the following entry:
Create a string value by selecting "Edit/New/String Value" menu option. Name it DoInGameLoadSave and press ENTER. Right click on the "DoInGameLoadSave" entry, click "Modify" then type 1 at the "Value Data" field and press ENTER. Exit and save the modified registry. "Load Game" and "Save Game" selections will now appear in the options menu when you press ESC during game play. Note: Do not use "Load Game" option in that menu, as it does not work properly (go back to the main menu instead); however the save option works as expected. The saved game name will be called "TestGameName".